Question

A cell phone plan charges $49.75 per month plus $13.98 in taxes, plus $0.60 per minute for calls beyond the 700-minute monthly

limit. Write a piecewise-defined function to model the monthly cost C (x) (in $) as a function of the number of minutes used for the
month.

Answer 1

49.95 + 14.02 = 63.97

c(m) = 63.97 if 0 < m ≥ 600

c(m) = 0.4m + 63.97 if m > 600