Mathematical Ideas (13th Edition) - Standalone book
13th Edition
ISBN: 9780321977076
Author: Charles D. Miller, Vern E. Heeren, John Hornsby, Christopher Heeren
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 3.3, Problem 95E
To determine
The saving cost of the circuit switch for one year.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Question #8 - A retail outlet sells 2000 pairs of pants a year. It costs $2 to store a pair of
pants per year. Each reorder costs $15, plus an additional $4 per pair of pants. How many
times per year should the store order pants and in what lot size to minimize inventory
costs?
QUESTION 7
XYZ Shirts is a small firm manufactures imprinted shirts for special occasions. A machine for printing is rented at the cost of $600 per month. One blank shirt costs $5 from the supplier. The finished shirts are sold at $20 per shirt. What
is the total profit in dollar if XYZ Shirts sells 100 shirts in a month? (Just type in the number as your answer.)
STEP 2: Take the sum of monthly expenditures and divide by the number of months.
3.1 Average Monthly Expenditures: CONCEPT CHECK
the following problems.
che average monthly expenditure of the following.
January: $795, February: $776, March: $751
STEP 1: Find the sum of monthly expenditures.
$.
Average Monthly Expenditures = $.
3. Use the Miller's records of monthly expenditures in Figure 3.1 on page 147 to find the average
monthly amount spent on the credit card payment.
STEP 1: Find the sum of monthly expenditures.
$
+ $
Monthly Expenditures=
STEP 2: Take the sum of monthly expenditures and divide by the number of months.
Sum of Expenditures
Average Monthly Expenditure = Number of Months
$.
Average Monthly Expenditures = $]
Page 13
Business Math A
Credit 1 LEP
LEARN 4LIFE
CHANGE YOUR STORY
Chapter 3 Solutions
Mathematical Ideas (13th Edition) - Standalone book
Ch. 3.1 - Decide whether each is a statement or is not a...Ch. 3.1 - The ZIP code for Oscar, Louisiana, is 70762.Ch. 3.1 - 3. Listen, my children, and you shall hear of the...Ch. 3.1 - 4.Did you yield to oncoming traffic?Ch. 3.1 - 5.
Ch. 3.1 - 6.
Ch. 3.1 - 7 Some numbers are positive.
Ch. 3.1 - |8. Grover Cleveland was president of the United...Ch. 3.1 - Accidents are the main cause of deaths of children...Ch. 3.1 - 10 It is projected that in the United States...
Ch. 3.1 - Where are you going tomorrow?Ch. 3.1 - Behave yourself and sit down.Ch. 3.1 - Kevin Catfish" McCarthy once took a prolonged...Ch. 3.1 - 14 One gallon of milk weighs more than 3 pounds.
Ch. 3.1 - Decide whether each statement is compound. I read...Ch. 3.1 - My brother got married in Copenhagen.Ch. 3.1 - 17. Tomorrow is Saturday.
Ch. 3.1 - Jing is younger than 18 years of age, and so is...Ch. 3.1 - Prob. 19ECh. 3.1 - 20. The sign on the back of the car read "Canada...Ch. 3.1 - 21 If Lorri sells her quota, then Michelle will be...Ch. 3.1 - If Bobby is a politician, then Mitch is a crook.Ch. 3.1 - Write a negation for each statement.
23. Her...Ch. 3.1 - 24. No rain fell in southern California today.
Ch. 3.1 - Some books are longer than this book.Ch. 3.1 - 26. All students present will get another chance.
Ch. 3.1 - 27. No computer repairman can play blackjack.
Ch. 3.1 - 28. Some people have all the luck.
Ch. 3.1 - Everybody loves somebody sometime.Ch. 3.1 - Prob. 30ECh. 3.1 - The trash needs to be collectedCh. 3.1 - Prob. 32ECh. 3.1 - Give a negation of each inequality. Do not use a...Ch. 3.1 - Prob. 34ECh. 3.1 - 35.
Ch. 3.1 - Prob. 36ECh. 3.1 - Try to negate the sentence The exact number of...Ch. 3.1 - Prob. 38ECh. 3.1 - Let p represent the statement 'She has green eyes...Ch. 3.1 - 40.
Ch. 3.1 - Prob. 41ECh. 3.1 - 42.
Ch. 3.1 - pqCh. 3.1 - 44.
Ch. 3.1 - pqCh. 3.1 - pqCh. 3.1 - (pq)Ch. 3.1 - 48.
Ch. 3.1 - Tyler collects DVDs and Josh is not an art major.Ch. 3.1 - Tyler does not collect DVDs or Josh is not an art...Ch. 3.1 - Tyler does not collect DVDs or Josh is an art...Ch. 3.1 - Josh is an art major and Tyler does not collect...Ch. 3.1 - 53. Neither Tyler collects DVDs nor Josh is an art...Ch. 3.1 - 54. Either Josh is an art major or Tyler collects...Ch. 3.1 - Incorrect use of quantifiers often is heard in...Ch. 3.1 - Prob. 56ECh. 3.1 - Refer to the groups of art labeled A. B. and C,...Ch. 3.1 - 58. No picture has a frame.
Ch. 3.1 - 59. At least one picture does not have a frame
Ch. 3.1 - Not every picture has a frame.Ch. 3.1 - 61. At least one picture has a frame.
Ch. 3.1 - 62. No picture does not have a frame.
Ch. 3.1 - All pictures do not have frames.Ch. 3.1 - Not every picture does not have a frameCh. 3.1 - 65. Every whole number is an integer.
Ch. 3.1 - 66. Every integer is a whole number.
Ch. 3.1 - There exists a natural number that is not an...Ch. 3.1 - 68. There exists an integer that is not a natural...Ch. 3.1 - 69. All rational numbers are real numbers.
Ch. 3.1 - Prob. 70ECh. 3.1 - Some rational numbers are not integers.Ch. 3.1 - Some whole numbers are not rational numbers.Ch. 3.1 - 73. Each whole number is a positive number.
Ch. 3.1 - Each rational number is a positive number.Ch. 3.1 - 75. Explain the difference between the statements...Ch. 3.1 - Prob. 76ECh. 3.1 - 77. Write the following statement using “every”:...Ch. 3.1 - Prob. 78ECh. 3.1 - Refer to Example 5. If we let c represent cat and...Ch. 3.1 - 80. Use symbols to express the statements for...Ch. 3.2 - 1. If q is false, what must be the truth value of...Ch. 3.2 - If q is true, what must be the truth value of the...Ch. 3.2 - If the statement pq is true, and p is true, then q...Ch. 3.2 - If the statement pq is false, and p is false, then...Ch. 3.2 - 5. If is true, what must be the truth value of...Ch. 3.2 - If p(qr) is true, what must be the truth value of...Ch. 3.2 - If (pq) is true, what must be the truth values of...Ch. 3.2 - If (pq) is false, what must be the truth values of...Ch. 3.2 - pCh. 3.2 - qCh. 3.2 - 11.
Ch. 3.2 - 12.
Ch. 3.2 - 13.
Ch. 3.2 - 14.
Ch. 3.2 - pqCh. 3.2 - pqCh. 3.2 - 17.
Ch. 3.2 - 18.
Ch. 3.2 - [p(p)]Ch. 3.2 - [(pq)q]Ch. 3.2 - 21. Is the statement a conjunction or a...Ch. 3.2 - Prob. 22ECh. 3.2 - Let p represent a true statement, and let q and r...Ch. 3.2 - 24.
Ch. 3.2 - p(qr)Ch. 3.2 - 26
Ch. 3.2 - (pq)(rq)Ch. 3.2 - (rq)(rq)Ch. 3.2 - 29.
Ch. 3.2 - [r(qp)]Ch. 3.2 - [q(rp)]Ch. 3.2 - 32.
Ch. 3.2 - Let p represent the statement 168. let q represent...Ch. 3.2 - Prob. 34ECh. 3.2 - qrCh. 3.2 - Prob. 36ECh. 3.2 - (pq)rCh. 3.2 - Prob. 38ECh. 3.2 - (rq)pCh. 3.2 - Prob. 40ECh. 3.2 - Give the number of rows in the truth table for...Ch. 3.2 - Prob. 42ECh. 3.2 - 43.
Ch. 3.2 - 44.
Ch. 3.2 - 45.
Ch. 3.2 - [(pq)(rs)][(mn)(uv)]Ch. 3.2 - 47 If the truth table for a certain compound...Ch. 3.2 - Is it possible for the truth table of a compound...Ch. 3.2 - Construct a truth table for each compound...Ch. 3.2 - pqCh. 3.2 - 51.
Ch. 3.2 - pqCh. 3.2 - (qp)qCh. 3.2 - 54.
Ch. 3.2 - 55.
Ch. 3.2 - (pq)(pq)Ch. 3.2 - (pq)rCh. 3.2 - r(pq)Ch. 3.2 - 59.
Ch. 3.2 - (rp)(pq)Ch. 3.2 - Construct a truth table for each compound...Ch. 3.2 - (rs)(pq)Ch. 3.2 - Use one of De Morgan’s laws to write the negation...Ch. 3.2 - I am not going or she is going.Ch. 3.2 - It is summer and there is no snow.Ch. 3.2 - Prob. 66ECh. 3.2 - I said yes but she said noCh. 3.2 - Prob. 68ECh. 3.2 - Prob. 69ECh. 3.2 - 810or52Ch. 3.2 - Prob. 71ECh. 3.2 - 72. The lawyer and the client appeared in court.
Ch. 3.2 - Prob. 73ECh. 3.2 - Prob. 74ECh. 3.2 - There exists an integer n such that n0andn0 ..Ch. 3.2 - 76. For some integer .
Ch. 3.2 - Complete the truth table for exclusive disjunction...Ch. 3.2 - Prob. 78ECh. 3.2 - Prob. 79ECh. 3.2 - Prob. 80ECh. 3.2 - Prob. 81ECh. 3.2 - Prob. 82ECh. 3.2 - Prob. 83ECh. 3.2 - Prob. 84ECh. 3.2 - 85 De Morgan's law
can be stated verbally, "The...Ch. 3.3 - Rewrite each statement using the if . . . then...Ch. 3.3 - Rewrite each statement using the if then...Ch. 3.3 - Rewrite each statement using the if . . . then...Ch. 3.3 - No perfect square integers have units digit 2, 3,...Ch. 3.3 - Prob. 5ECh. 3.3 - Rewrite each statement using the if then...Ch. 3.3 - Prob. 7ECh. 3.3 - Rewrite each statement using the if then...Ch. 3.3 - Prob. 9ECh. 3.3 - Decide whether each statement is true or...Ch. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Decide whether each statement is true or...Ch. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - |17. Explain why the statement “If , then ” is...Ch. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 20ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Let s represent “She sings for a living,” let p...Ch. 3.3 - Let s represent She sings for a living, let p...Ch. 3.3 - Prob. 27ECh. 3.3 - Let s represent She sings for a living, let p...Ch. 3.3 - Prob. 29ECh. 3.3 - Let s represent “She sings for a living,” let p...Ch. 3.3 - Prob. 31ECh. 3.3 - Let b represent I take my ball, lets represent it...Ch. 3.3 - Prob. 33ECh. 3.3 - Let b represent I take my ball, lets represent it...Ch. 3.3 - Prob. 35ECh. 3.3 - Let b represent I take my ball, lets represent it...Ch. 3.3 - Prob. 37ECh. 3.3 - Find the truth value of each statement. Assume...Ch. 3.3 - Prob. 39ECh. 3.3 - Find the truth value of each statement. Assume...Ch. 3.3 - Prob. 41ECh. 3.3 - Find the truth value of each statement. Assume...Ch. 3.3 - Prob. 43ECh. 3.3 - Find the truth value of each statement. Assume...Ch. 3.3 - Prob. 45ECh. 3.3 - Find the truth value of each statement. Assume...Ch. 3.3 - Prob. 47ECh. 3.3 - Prob. 48ECh. 3.3 - Prob. 49ECh. 3.3 - Construct a truth table for each statement....Ch. 3.3 - Prob. 51ECh. 3.3 - Construct a truth table for each statement....Ch. 3.3 - Prob. 53ECh. 3.3 - Construct a truth table for each statement....Ch. 3.3 - Construct a truth table /breach statement....Ch. 3.3 - Construct a truth table /breach statement....Ch. 3.3 - Prob. 57ECh. 3.3 - Construct a truth table /breach statement....Ch. 3.3 - 59. What is the minimum number of Fs that must...Ch. 3.3 - Prob. 60ECh. 3.3 - Prob. 61ECh. 3.3 - Write the negation of each statement. Remember...Ch. 3.3 - Prob. 63ECh. 3.3 - Write the negation of each statement. Remember...Ch. 3.3 - Prob. 65ECh. 3.3 - Write the negation of each statement. Remember...Ch. 3.3 - Write each statement as an equivalent statement...Ch. 3.3 - Prob. 68ECh. 3.3 - Prob. 69ECh. 3.3 - Prob. 70ECh. 3.3 - Prob. 71ECh. 3.3 - Prob. 72ECh. 3.3 - Prob. 73ECh. 3.3 - Prob. 74ECh. 3.3 - Prob. 75ECh. 3.3 - Prob. 76ECh. 3.3 - Prob. 77ECh. 3.3 - Prob. 78ECh. 3.3 - Prob. 79ECh. 3.3 - Prob. 80ECh. 3.3 - Prob. 81ECh. 3.3 - Prob. 82ECh. 3.3 - Prob. 83ECh. 3.3 - Write a logical statement representing each of the...Ch. 3.3 - Write a logical statement representing each of the...Ch. 3.3 - Prob. 86ECh. 3.3 - Prob. 87ECh. 3.3 - Prob. 88ECh. 3.3 - Prob. 89ECh. 3.3 - Prob. 90ECh. 3.3 - Draw circuits representing the following...Ch. 3.3 - Prob. 92ECh. 3.3 - Prob. 93ECh. 3.3 - Draw circuits representing the following...Ch. 3.3 - Prob. 95ECh. 3.3 - Prob. 96ECh. 3.3 - Prob. 97ECh. 3.4 - For each given conditional statement (or statement...Ch. 3.4 - For each given conditional statement (or statement...Ch. 3.4 - If it aint broke, dont fix it. For each given...Ch. 3.4 - Prob. 4ECh. 3.4 - For each given conditional statement (or statement...Ch. 3.4 - 6, Milk contains calcium. For each given...Ch. 3.4 - For each given conditional statement (or statement...Ch. 3.4 - Prob. 8ECh. 3.4 - Prob. 9ECh. 3.4 - For each given conditional statement (or statement...Ch. 3.4 - Prob. 11ECh. 3.4 - Prob. 12ECh. 3.4 - Prob. 13ECh. 3.4 - Prob. 14ECh. 3.4 - Prob. 15ECh. 3.4 - Prob. 16ECh. 3.4 - 17 Discuss the equivalences that exist among a...Ch. 3.4 - Prob. 18ECh. 3.4 - Prob. 19ECh. 3.4 - Prob. 20ECh. 3.4 - Prob. 21ECh. 3.4 - Write each statement in the form if p, then q....Ch. 3.4 - Prob. 23ECh. 3.4 - Write each statement in the form “if p, then...Ch. 3.4 - Write each statement in the form “if p, then...Ch. 3.4 - 26. Being in Kalamazoo is sufficient for being in...Ch. 3.4 - Prob. 27ECh. 3.4 - Prob. 28ECh. 3.4 - Prob. 29ECh. 3.4 - 30. The economy will recover only if employment...Ch. 3.4 - Prob. 31ECh. 3.4 - No integers are irrational numbersCh. 3.4 - Prob. 33ECh. 3.4 - Prob. 34ECh. 3.4 - Prob. 35ECh. 3.4 - 36. A square is a rectangle with two adjacent...Ch. 3.4 - Prob. 37ECh. 3.4 - Prob. 38ECh. 3.4 - Prob. 39ECh. 3.4 - Prob. 40ECh. 3.4 - Prob. 41ECh. 3.4 - Prob. 42ECh. 3.4 - Prob. 43ECh. 3.4 - Prob. 44ECh. 3.4 - Prob. 45ECh. 3.4 - Prob. 46ECh. 3.4 - Prob. 47ECh. 3.4 - Prob. 48ECh. 3.4 - Prob. 49ECh. 3.4 - Prob. 50ECh. 3.4 - Prob. 51ECh. 3.4 - Prob. 52ECh. 3.4 - Prob. 53ECh. 3.4 - This number is positive. This same number is a...Ch. 3.4 - Prob. 55ECh. 3.4 - Prob. 56ECh. 3.4 - Exercises 57 and 58 refer to the chapter opener on...Ch. 3.4 - Exercises 57 and 58 refer to the chapter opener on...Ch. 3.5 - Decide whether each argument is valid or...Ch. 3.5 - 2. All disc jockeys play music.
Ch. 3.5 - All celebrities have problems....Ch. 3.5 - All Southerners speak with an accent....Ch. 3.5 - All dogs love to bury bones...Ch. 3.5 - 6 All vice presidents use cell phones.
Ch. 3.5 - 7 All residents of Colorado know how to breathe...Ch. 3.5 - Prob. 8ECh. 3.5 - Prob. 9ECh. 3.5 - 10. Some philosophers are absent minded.
Ch. 3.5 - Prob. 11ECh. 3.5 - Prob. 12ECh. 3.5 - Refer to Example 3. If the second premise and the...Ch. 3.5 - Prob. 14ECh. 3.5 - Construct a valid argument based on the Euler...Ch. 3.5 - x represents vaccinationsCh. 3.5 - As mentioned in the text, an argument can have a...Ch. 3.5 - All actors have cars....Ch. 3.5 - All chickens have beaks....Ch. 3.5 - All chickens have beaks....Ch. 3.5 - Prob. 21ECh. 3.5 - Prob. 22ECh. 3.5 - Prob. 23ECh. 3.5 - 24. A scalene triangle has a longest side.
Ch. 3.5 - In Exercises 25-30. the premises marked A, B and C...Ch. 3.5 - 26. Some people who live in a suburb drive.
Ch. 3.5 - Prob. 27ECh. 3.5 - Some people who contribute to air pollution live...Ch. 3.5 - Prob. 29ECh. 3.5 - Prob. 30ECh. 3.6 - Each argument either is valid by one of the forms...Ch. 3.6 - 2. If you use binoculars, then you get a glimpse...Ch. 3.6 - 3. If Marina works hard enough, she will get a...Ch. 3.6 - If Isaiahs ankle heals on time, hell play this...Ch. 3.6 - 5. If he doesn't have to get up at 3 00 a m., he's...Ch. 3.6 - A mathematician is a device for turning coffee...Ch. 3.6 - If Clayton pitches, the Dodgers win....Ch. 3.6 - If Josh plays, the opponent gets shut out....Ch. 3.6 - If youre going through hell, keep going. (quote...Ch. 3.6 - If you can't get rid of the skeleton in your...Ch. 3.6 - She uses e-commerce or she pays by credit card....Ch. 3.6 - 12 Mia kicks or Drew passes.
Ch. 3.6 - Use a truth table to determine whether the...Ch. 3.6 - pqp qCh. 3.6 - pqq pCh. 3.6 - Prob. 16ECh. 3.6 - 17.
Ch. 3.6 - 18.
Ch. 3.6 - 19.
Ch. 3.6 - 20.
Ch. 3.6 - 21. =
Ch. 3.6 - (pq)(pq)qpCh. 3.6 - (pq)(pq)p qCh. 3.6 - Prob. 24ECh. 3.6 - 25.
Ch. 3.6 - Prob. 26ECh. 3.6 - Earlier we showed how to analyze arguments using...Ch. 3.6 - Prob. 28ECh. 3.6 - Determine whether each argument is valid or...Ch. 3.6 - 30. If Hurricane Gustave hit that grove of trees,...Ch. 3.6 - 31. If Yoda is my favorite Star Wars character,...Ch. 3.6 - 32 Carne Underwood sings or Joe Jonas is not a...Ch. 3.6 - The Cowboys will make the playoffs if and only if...Ch. 3.6 - If I've got you under my skin. then you are deep...Ch. 3.6 - 35. If Dr. Hardy is a department chairman, then he...Ch. 3.6 - Prob. 36ECh. 3.6 - Prob. 37ECh. 3.6 - All men are mortal Socrates is a man Therefore,...Ch. 3.6 - A recent DirecTV commercial had the following...Ch. 3.6 - Molly made the following observation If I want to...Ch. 3.6 - Prob. 41ECh. 3.6 - 42. None of your sons can do logic.
Ch. 3.6 - Prob. 43ECh. 3.6 - Prob. 44ECh. 3.6 - Prob. 45ECh. 3.6 - Prob. 46ECh. 3.6 - Prob. 47ECh. 3.6 - Prob. 48ECh. 3.6 - Prob. 49ECh. 3.6 - Let p be one is able to do logic," q be one is fit...Ch. 3.6 - Prob. 51ECh. 3.6 - Let p be it is a guinea pig. q be it is hopelessly...Ch. 3.6 - Prob. 53ECh. 3.6 - Prob. 54ECh. 3 - Write a negation for each statement. 63=3Ch. 3 - Write a negation for each statement. All men are...Ch. 3 - Prob. 3TCh. 3 - Write a negation for each statement. If I fall in...Ch. 3 - Write a negation for each statement.
5. She...Ch. 3 - Prob. 6TCh. 3 - Prob. 7TCh. 3 - Prob. 8TCh. 3 - Using the same statements as for Exercises 6-8,...Ch. 3 - Prob. 10TCh. 3 - In each of the following assume that p is true and...Ch. 3 - In each of the following assume that p is true and...Ch. 3 - In each of the following, assume that p is true...Ch. 3 - In each of the following assume that p is true and...Ch. 3 - 15 Explain in your own words why, if p is a...Ch. 3 - State the necessary conditions for each of the...Ch. 3 - Construct a truth table for each of the following....Ch. 3 - Construct a truth table for each of the following....Ch. 3 - Decide whether each statement is true or false....Ch. 3 - Decide whether each statement is true or false.
20...Ch. 3 - Write each conditional statement in if... then...Ch. 3 - Write each conditional statement in if then form....Ch. 3 - Write each conditional statement in if… then...Ch. 3 - Write each conditional statement in if then form....Ch. 3 - For each statement in Exercises 25 and 26, write...Ch. 3 - Prob. 26TCh. 3 - Prob. 27TCh. 3 - 28 Match each argument in parts (a) - (d) in the...Ch. 3 - Use a truth table to determine whether each...Ch. 3 - Use a truth table to determine whether each...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.Similar questions
- The astronauts of Expedition 28 on the International Space Station spend 15 weeks in space. Convert the time to minutes.arrow_forwardGraph on the number line: (a) x2 (b) x3 (c) x1arrow_forwardFigure 2.3. Use this table with the question(s) below, as needed. PERSONAL EXEMPTIONS Single - $2,000 Married - $4,000 Each Dependent - $2,000 Melissa Sartini's gross pay is $52,000 a year. The state income tax rate is 3% of taxable wages. Melissa takes a married exemption for herself and her husband. Using Figure 2.3, how much is withheld a year for state income tax Select one: a. $1,440 O b. $1,840 O c. $2,340 d. $1,340arrow_forward
- QUESTION 3 A wholesaler must decide how many computers to purchase before they know how many they will be able to sell to local retailers. The wholesaler purchases the computers for S300 each and sells them to retailers for $350 each. If the wholesaler is not able to sell them to a retailer then the wholesaler can return them to the manufacturer (for a refund of the S300 cost), but the wholesaler must pay $40 per computer that it returns to the manufacturer (in shipping, handling, and insurance costs). The following probability distribution describes the number of computers the wholesaler may possibly sell to local retailers: there is a 21% chance that they will sell 900 computers, a 56% chance that they will sell 1200 computers; otherwise, they will sell 1500 computers. What is the expected number of computers the wholesaler will sell? (please round your answer to 1 decimal place)arrow_forwardQUESTION THREE In the first month after opening, a mobile phone shop sold 280 phones. A model for Future trading assumes that sales will increase by x phones per month for the next 35 months, so that (280 +x) phones will be sold in the second month, (280 + 2x) in the third month, and so on. a. Using this model with x 5, calculate i. the number of phones sold in the 36th month, ii. the total number of phones sold over the 36 months. The shop sets a sales target of 17 000 phones to be sold over the 36 months. Using the sɛ model, b. find the least value of x required to achieve this target. The fifth term of an arithmetic progression is 28 and the tenth term is 58. c. Find the first term and the common difference The sum of all the terms in this progression is 444.arrow_forwardA certain city's power company charges their residents for electricity usage on a daily basis. There is a basic charge of 11.57 cents. For each day the first 10 kWh cost 4.81 cents per kWh and any additional kWhs are 9.69 per kWh. (A kWh, or kilowatt-hour, is a unit of energy.) (a) Complete the following table using the information provided above. kWhkWh 0 5 10 15 20 cost (dollars)cost (dollars) kWhkWh 25 30 35 40 cost (dollars)cost (dollars) (b) We can define a piecewise function f(x)f(x) where xx is the kWh used in a day and f(x)f(x) is the cost, in dollars. This function would have the form f(x)={g(x)h(x)ififx∈Ax∈Bf(x)={g(x)ifx∈Ah(x)ifx∈B What functions g(x)g(x) and h(x)h(x) make up the piecewise function f(x)f(x)? g(x)=g(x)= for A = h(x)=h(x)= for B = Hint: A and B are intervals. If an interval uses ±∞±∞ write inf or -inf . (c) Using the above function, what is the cost of 26 kWh? dollars. (d) For 3 dollars, what is the maximum kWh usage for one…arrow_forward
- The line graphs in Figure show the percentages of marriages ending in divorce based on the wife’s age at marriage.Here are two mathematical models that approximate the data displayed by the line graphs:In each model, the variable n is the number of years after marriage and the variable d is the percentage of marriages ending in divorce.a. Use the appropriate formula to determine the percentage of marriagesending in divorce after 10 years when the wife is over 25 at the time ofmarriage.b. Use the appropriate line graph in Figure to determine the percentageof marriages ending in divorce after 10 years when the wife is over 25 at the time of marriage.c. Does the value given by the mathematical model underestimate or overestimate the actual percentage of marriages ending in divorce after10 years as shown by the graph? By how much?arrow_forwardQUESTION 5 A hardware store sells hammers and screwdrivers. The hammers cost $19 each and the screwdrivers cost $16 each. On a certain day, the store sells twice as many hammers as screwdrivers. If the store sold $162 worth of these items on that day, how many hammers did they sell?arrow_forwardDespite booming new car sales with their cha-ching sounds, the average age of vehicles on roads is not going down. The bar graph shows the average price of new cars in Country A and the average age of cars on roads for two selected years. In 2014, the average price of a new car was $37,600. For the period shown, new-car prices increased by approximately $1250 per year. If this trend continues, how many years after 2014 will the price of a new car average $43,850? In which year will this occur?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University
Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning
Algebra for College StudentsAlgebraISBN:9781285195780Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage Learning
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
Algebra for College Students
Algebra
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Cengage Learning
Use of ALGEBRA in REAL LIFE; Author: Fast and Easy Maths !;https://www.youtube.com/watch?v=9_PbWFpvkDc;License: Standard YouTube License, CC-BY
Compound Interest Formula Explained, Investment, Monthly & Continuously, Word Problems, Algebra; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=P182Abv3fOk;License: Standard YouTube License, CC-BY
Applications of Algebra (Digit, Age, Work, Clock, Mixture and Rate Problems); Author: EngineerProf PH;https://www.youtube.com/watch?v=Y8aJ_wYCS2g;License: Standard YouTube License, CC-BY