Write a piecewise function that models the cellular phonebilling plan described below. Let x represent the number of minutesused and? C(x) represent the cost for those x minutes. Then graphthe fu2 answers

Write a piecewise function that models the cellular phone billing plan described below. Let x represent the number of minutes used and C(x) represent the cost for those x minutes. Then graph the function.

$25.00 per month buys 350 minutes. Additional time costs $0.20 per minute.

Fill in the missing values or expressions for the piecewise function below.

C(x) =

(Simplify your answer. Do not include the $ symbol in your answer.)