Question

A phone plan charges an initial fee of $40 plus $.40 per minute. Which function equation represents this problem?

Answer 1

Answer: A. f(x) = .40x + 40

Step-by-step explanation: The phone plan has an initial value of $40. It increases $.40 every minute. This represents a constant value. Therefore, the function is linear, with the equation f(x) = .40x + 40.