Question

The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she streams in a month. What is the value and meaning of f(18)?

A. $27.00; this is the amount Kelsey pays for 18 months of service

B. $27.00; this is the amount Kelsey pays for 18 movies in 1 month

C. $39.50; this is the amount Kelsey pays for 18 months of service

D. $39.50; this is the amount Kelsey pays for 18 movies in 1 month

Answer 1

It's D

Explanation: (I got right on a quiz)

Answer 2

f ( 18 ) = 1,50 * 18 + 12.50 = 27.00 + 12.50 = $39.50,
x - number of movies.
Answer: D ) $39.50; this is the amount Kelsey pays for 18 movies in 1 month