24. Model with mathematics. Riley and Rhoda plan to buy several bagsof dog food and a dog collar. Each bag of dog food costs $7, and the dogcollar costs $5.a. Use the information above to write an expression for the amount ofmoney they will spend if they buy b bags of food.b. Riley and Rhoda have $30. Use this information and the expressionyou wrote for Part (a) to write an inequality for finding the numberof bags of food they could buy.c. Solve the inequality and graph the solutions. Check your answer in

It is given that, Riley and Rhoda plan to buy several bags of dog food and a dog collar. Each bag of…

Answered: 24. Model with mathematics. Riley and…

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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A cell phone company offers two texting plans. People who use plan A pay 10 cents for each text sent or received. People who use plan B pay 12 dollars per month, and then pay an additional 2 cents for each text sent or received. a. Write an inequality to represent the fact that it is cheaper for someone to use plan A than plan B. Use x to represent the number of texts they send. B iU 三刘 DAE
17. An electronics store makes a profit of $30 for every portable DVD player sold and $60 for every DVD recorder sold. The manager's target is to make at least $250 a day on sales of the portable DVD players and DVD recorders. Write an inequality that represents the number of both kinds of DVD players that can be sold to reach or beat the sales target. Let p represent the number of portable DVD players and r represent the number of DVD recorders. O 60p + 30r > 250 O 30p + 60r 250 O 30p + 60r >250 acer
Write out the meaning of each inequality. Then determine whether the inequality is true or false. a. -5 -2 c. -6 < 3 d. 10 z 10 e. -9 2 6
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Amari likes the money he made mowing lawns and decides he’d like to continue to mow lawns to save up for a car by the end of next summer. Amari needs to earn at least $3000 for the car he wants. Let x be the number of smallyards Amari mows and let y be the number of large yards Amari mows. For large yardsAmari charges $30 and for small yards he charges $20.What inequality wouldmodel the situation? If Amari mows 64 large yards, what is the minimum number of small yardshe will need to mow in order to save enough for the car?
Frank was planning a 10-week bike riding trip through Europe. He planned on taking $1,500 with him for food and other expenses. • He wanted to return home with at least $250. Which inequality will allow Frank to determine how much he can spend each week? 1500 10w > 250 1500 10w 2 250 O 1500 - 10w < 250 O 1500 10w < 250
that includes a football, baseball, soccer ball, and basketball. This complete boxed set costs 1. Jonathan wants to save up enough money so that he can buy a new sports equipment set Wednesday- Day 3 50. Jonathan has $15 he saved from his birthday In order to make more money.ne plans to wash neighbors' windows. He plans to charge $3 for each window he washes. A. Write and solve an inequality that represents the number of windows Jonathan needs fo wash order to save at least the minimum amount he needs to buy the boxed set.
John, Rasheed, and Jeorge are different ages. Rasheed is six less than twice John’s age. Jeorge’s age is nine more than half of John’s age. The difference between Rasheed and Jeorge’s ages is no more than nine years.1. Write an expression that represents the difference between Rasheed and Jeorge’s ages.2. Write an absolute value inequality to represent the maximum difference in their ages.3. Determine whether it is possible for John to be twenty years old. Explain your reasoning.4. Algebraically determine the greatest and least age John can be so that the difference between Rasheed and Jeorge’s ages is no more than nine years
an answer. Philip needs to incorporate at least 200 roses in his floral arrangements for a wedding. Each centerpiece will have 24 roses, and each bouquet will have 10 roses. Write an inequality to represent the situation, if x represents the number of centerpieces Philip makes. and y represents the number of bouquets. e Et
Each month your cell phone company charges you $50 for your plan plus 5 cents for each text you send. You have $90 budgeted for cell phone expenses for the month. Construct an inequality to make a determination about the number of texts you can send each month. Note that you cannot send a fraction of a text. You must send at most texts this month in order to stay within your budget.
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