Algebra
posted by Anonymous .
A taxicab charges $.90 for the first 1/5 mile and $.60 for each additional 1/5 mile. If a customer rides in this cab for m miles (m>1/5) , which of the following functions descibes the cost,c(m), of this tax ride in dollars?

c(m) = .90 + .60(5m1)
That is a continuous function. If you want a step function, you'd need to round up to the next integer value.
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