Question

A hair salon charges a fixed rate of $25.00 for a haircut and then an additional $15 for any other services. Write a function to model the cost of services there and then determine how many services you had if you were charged $25.
A)
f(x) = 15x + 25; f(0) = 25


B)
f(x) = 25x + 15; f(.4) = 25
Eliminate

C)
f(x) = 15x + 25; f(25) = 400


D)
f(x) = 25x + 15; f(25) = 640

Answer 1

Answer:

A)  f(x) = 15x + 25; f(0) = 25

Step-by-step explanation:

x represents the amount of extra services, and 15x respresents the amount paid for all of the services. 25 represents the initial fee. f(0)=25 means that it cost $25 for a haircut with no extra services.

Let's say you have a haircut with two extra services. You would replace the x in the equation with the number of extra services, 2 in this case.

f(2)=15(2) + 25

f(2)=30+25

f(2)=55

It would cost $55 for a haircut with 2 extra services.

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