suppose that the charges for a cell phone bill are $0.50 for the first minute and $0.25 for each additional minute. assume that a fraction of a minute is rounded up. how do i find a formula for a function "f" that computes the cost of a call that is "x" minutes long, where 0 < x <= 5? but writing it in a piecewise-constant fuction?
an explanation would be greatly appreciated and thanks for the help
2006-09-20
13:18:32
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4 answers
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asked by
shih rips
6
in
Science & Mathematics
➔ Mathematics