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

1 answer:

34kurt2 years ago

4 0

49.95 + 14.02 = 63.97

c(m) = 63.97 if 0 < m ≥ 600

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

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