Tuesday
July 29, 2014

Homework Help: math

Posted by Lisa...please help on Thursday, November 26, 2009 at 9:32pm.

I am supposed to come up with a real life problem and then write a function to represent that real life scenario, but I am not confident in my answer. Could you look it over and tell me if I did it correctly?

The basic cell phone plan costs 19.99 a month plus an additional fee of $0.15 for every minute of use. What is the plan holders monthly cost if he or she uses 75 minutes of talk time?
What is the plan holders monthly cost if he or she uses 120 minutes of talk time?
If c = cost and t =the number of months we have a function that will look like this to represent my real life example¥
C(t)=$19.99+ $0.15t
Inputs
c (75)
c(120)

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