Linda is doing car wash with her teammates to collect money for their trip. They can get $12 for the car that they

Question

Linda is doing car wash with her teammates to collect money for their trip. They can

get $12 for the car that they wash. In order to start their work, they spent $155 to buy

supplies needed for the work.

Part A:

Create a function f(c) to represent the profit that they make for washing c cars.

f(c) =

(b)

Part B:

Use the function rule that you created on Part A to find the value of f ‘(145)

f-? (145)

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Yến Oanh 4 years 2021-08-12T17:10:53+00:00 1 Answers 16 views 0

Answers ( )

  1. ngochoa
    0
    2021-08-12T17:12:04+00:00
    Reply

    9514 1404 393

    Answer:

      (a) f(c) = 12c -155

      (b) f⁻¹(145) = 25

    Step-by-step explanation:

    (a) Profit is the difference between revenue (12c) and cost (155). The profit function is …

      f(c) = 12c -155

    __

    (b) The number of cars Linda’s team must wash to achieve a profit of $145 is found from …

      145 = 12c -155

      300 = 12c . . . . . . add 155

      25 = c . . . . . . . . . divide by 12

      f⁻¹(145) = 25 . . . . the team must wash 25 cars for a profit of $145

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