Please don't provide handwritten solution ..... A manufacturer estimates that she can sell a maximum of 110 thousand cell phones in a city. By advertisingheavily, her total sales grow at a rate proportional to the distance below this upper limit.If she enters a new market, and after 3 months her total sales are 51 thousand phones, find a formula forthe total sales (in thousands) t months after entering the market, and use this to estimate the total salesat the end of the first year.Total sales at end of the first year:Give your answer to at least 1 decimal placethousand phones

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Answered: A manufacturer estimates that she can…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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4) Mrs. Johnson's new car has an 18 gallon gas tank. If she can travel 400 miles on one tank of gasoline, what is her miles – per - gallon rate to the nearest whole number? Show your work.
Use the four-step method in problem solving to solve the problem. A college cafeteria pays student cashiers $8.50 per hour. Cashiers earn an additional $1.40 per hour for each hour worked over 35 hours per week. A cashier worked 44 hours one week and 39 hours the second week. How much did this cashier earn in this two-week period? ..... О А. $613.20 В. $705.50 C. $7,171.20 D. $723.70
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Can you show the work and explain your reasoning for the 3rd question.
2. You have some coins, each of which is a penny (1 cent), a nickel (5 cents), a dime (10 cents), or a quarter (25 cents). You know that • you have twice as many pennies as nickels, • the number of dimes is one more than the number of pennies and nickels combined, you have 34 coins in total, • and the total value of your coins is $2.70 (270 cents). (a) Set up a system of linear equations for the numbers of pennies, nickels, dimes, and quarters you have. (b) Determine how many coins of each type you have, by solving the system from part (a).
3.) Mr. Richards and Mr. Dolge each began improving their yards over the summer by buying bags of soil (fancy dirt) and bags of mulch (bark dust). Since Mr. Dolge has access to a truck, Mr. Richards got a ride and as a result they got their supplies from the same store. Mr. Dolge spent $97 on 3 bags of soil and 14 bags of mulch. Mr. Richards got 14 bags of soil and 7 bags of mulch for $161. They forgot to get a receipt, but just in case they need more supplies, they are wondering how much each bag of soil will cost, and how much each bag of mulch will cost. What should they find these prices to be?
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59. Car repairs Smith Chevrolet charges $50 per hour for labor on car repairs. Lopez Ford charges a diagnosis fee of $30 plus $40 per hour for labor. If the labor on an engine repair costs the same at either shop, how long does the repair take?
A contractor has a contract which which will expire in 40 days. At present, he has 80 men on the job and can finish the job in 50 days. The wage per day of 40 men is $500 each and the other 40 men is $300, each for 8 hours work per day. The fine for the delay in the work is $10,000 per day. 1st question: How many more men should the contractor add in order to complete the work on time? 2nd question: Assuming that the additional men to be added will be paid $400 per day, will the contractor save money by employing enough men to complete the work on time or by not adding more men and just pay the fine? If any, how much is the savings? No overtime work is permitted.
Show your complete and clear solution.
7) (a) If my favorite cereal costs $2.99 for a 14-ounce box, what is the price per ounce? (b) A gallon of milk costs $2.89. What is the price per ounce? (c) A three-pound bag of apples is on sale for $2.49. What is the price per pound? (d) In one store, a 36-pack of diapers costs $12.99. Another store is selling bonus packs, containing 42 diapers, for $14.59. Which is the better deal?

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