SOLUTION: the cost of a telephone call is 5 pesos for the first three minutes and an additional of 2 pesos for each additional minute or fractional part thereof. find the cost of all call l

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Question 889233: the cost of a telephone call is 5 pesos for the first three minutes and an additional of 2 pesos for each additional minute or fractional part thereof.
find the cost of all call lasting .5 min, 3 minutes, and 5 minutes
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
c(t)=5+2(t-3), t>3
a) c(0.5)=5
b) c(3)=5
c) c(5)=5+2(5-3)=5+2(2)=9