Evaluating Real-Life Functions: Cost Comparisons for 8th Graders

A car rental company charges a flat fee of $30 plus $0.20 per mile driven. Another company charges $25 plus $0.25 per mile. How much would you pay for 100 miles with each company? Which is cheaper?

• $40 for Company A and $45 for Company B

• $55 for both companies

• Both companies charge $50 for 100 miles.

• $45 for Company A and $50 for Company B

A gym charges a monthly fee of $40 plus $5 for each class attended. Another gym charges $30 with no class fees. If you attend 6 classes in a month, how much do you pay at each gym? Which gym is more economical?

• The first gym costs $70 and the second gym costs $30. The second gym is more economical.

• The first gym costs $80 and the second gym costs $20.

• The first gym costs $60 and the second gym costs $40.

• The first gym costs $50 and the second gym costs $35.

A phone plan costs $50 per month with unlimited texting and calls, and an additional $10 for 5GB of data. Another plan costs $40 per month with unlimited texting and calls but charges $15 for 5GB of data. Which plan is more cost-effective for 5GB of data?

• The second plan has no data charges.

• Both plans cost the same for 5GB of data.

• The first plan is more cost-effective.

• The second plan is more cost-effective.

A bakery sells cupcakes for $3 each and cookies for $2 each. If you buy 12 items, how many of each can you buy if you spend $30? Compare the number of cupcakes and cookies you can buy.

• 5 cupcakes and 7 cookies

• 8 cupcakes and 4 cookies

• 10 cookies and 2 cupcakes

• 6 cupcakes and 6 cookies

A subscription service charges $15 per month for basic access and $25 for premium access. If you want to compare the total cost over a year, how much would each option cost? Which option is more economical?

• Both options cost the same at $200 per year.

• Premium access is more economical at $250 per year.

• Basic access is more economical at $180 per year compared to premium access at $300.

• Basic access costs $240 per year, premium access costs $300.

A delivery service charges $5 for delivery plus $2 per item. Another service charges $3 for delivery plus $3 per item. If you order 4 items, how much do you pay with each service? Which service is cheaper?

• First service: $13, Second service: $15. Cheaper service: First service.

• First service: $15, Second service: $13. Cheaper service: Second service.

• First service: $14, Second service: $14. Cheaper service: Both are the same.

• First service: $10, Second service: $12. Cheaper service: Second service.

A school is planning a field trip. The cost per student is $20 for a bus rental and $10 for admission to the museum. Another option is $15 for the bus and $12 for admission. If 30 students are going, which option is cheaper?

• The first option is cheaper.

• Both options cost the same.

• The second option is cheaper.

• The second option costs $600.

A streaming service offers a plan for $10 per month with ads and $15 per month without ads. If you want to compare the total cost over 6 months, how much would you pay for each plan? Which plan is more cost-effective?

• The plan without ads costs $90 and is more cost-effective.

• The plan with ads costs $90 and is more cost-effective.

• Both plans cost $75 and are equally cost-effective.

• The plan with ads costs $60 and is more cost-effective.

A landscaping company charges $100 for a basic service and $150 for a premium service that includes additional features. If you want to compare the total cost for 3 services, how much would you pay for each? Which service is more economical?

• Basic service: $300, Premium service: $450. Basic service is more economical.

• Basic service: $300, Premium service: $500. Both services cost the same.

• Basic service: $200, Premium service: $300. Basic service is less expensive.

• Basic service: $250, Premium service: $400. Premium service is more economical.

A local farmer sells apples for $2 per pound and oranges for $3 per pound. If you buy 10 pounds of fruit, how can you maximize the number of apples and oranges you can buy with $20? Compare the quantities you can purchase.

• 10 pounds of apples (0 pounds of oranges) maximizes the quantity.

• 10 pounds of oranges (0 pounds of apples)

• 8 pounds of oranges and 2 pounds of apples

• 5 pounds of apples and 5 pounds of oranges