1 / 7

p.341: 7

p.341: 7. The Strauss family is deciding between two lawn-care service. Green Lawn charges a $49 startup fee, plus $29 per month. Grass Team charges a $25 startup fee, plus $37 per month. a. In how many months will both lawn-care services cost the same? What will that cost be? 3 months; $136

tobit
Download Presentation

p.341: 7

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. p.341: 7 The Strauss family is deciding between two lawn-care service. Green Lawn charges a $49 startup fee, plus $29 per month. Grass Team charges a $25 startup fee, plus $37 per month. a. In how many months will both lawn-care services cost the same? What will that cost be? 3 months; $136 b. If the family will use the service for only 6 months, which is the better option? Explain. Green Lawn; for 6 months. Green Lawns service costs only $223, while Grass Team's costs $247.

  2. p.340: 17 Casey wants to buy a gym membership. One gym has a $150 joining fee and costs $35 per month. Another gym has no joining fee and costs $60 per month. a. In how many months will both gym memberships cost the same? What will that cost be? 6 months; $360 b. If Casey plans to cancel in 5 months, which is the better option for him? Explain. The second option; for 5 months. It costs only $300, while the other option costs $325.

  3. p.341: 24 Justin and Lacee are taking a walk. Justin walks at a rate of 6 ft/s, while Lacee walks at 4 ft/s. Lacee starts 10 ft ahead of Justin. a. After how many seconds will Lacee and Justin be next to each other? What will that distance be? 5 s; 30 ft b. How many seconds will it take for Justin to catch up to Lacee if she starts 32 ft ahead of Justin? 16s

  4. p.341: 27 Helene invested a total of $1000 in two simple interest bank accounts. One account paid 5% annual interest; the other paid 6% annual interest. The total amount of interest she earned after one year was $58. Write and solve a system of equations to find the amount invested in each account. x + y = 1000 $200 at 5% 0.05x + 0.06y = 58 $800 at 6%

  5. p.341: 32 Tricia and Michael share a cell phone plan. Together, they made a total of 52 calls last month for a total of 620 min. Tricia averaged 15 min for each of her calls, while Michael averaged 10 mins. a. How many calls did Tricia make last month? Michael? 20; 32 b. How many calls did Tricia make if the total number of calls was 60?

  6. p.341: 35 At a school store, Juanita bought 2 books and a backpack for a total of $26 before tax. Each book cost $8 less than the backpack. a. Write a system of equations that can be used to find the price of each book and the price of the backpack. 2x + y = 26 x = y - 8 b. Solve the system by substitution. book $6; backpack $14 c. Solve this system by graphing. Discuss advantages and disadvantages of solving by substitution and solving by graphing. x is already isolated so substitution works well.

More Related