Mathematics
Mydogmeows
14

A cell phone company charges a basic rate of $19.99 per month for 300 minutes of local usage. Any local usage over 300 minutes is charged at $.10 per minute. All long distance calls are charged at $.25 per minute. Write and simplify an expression that gives the total monthly bill if x is the number of local minutes and y is the number of long distance minutes. Evaluate the expression if local usage totals 375 minutes and long distance usage totals 54 minutes.

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(1) Answers
lilchop06

total = 19.99 + 0.10(x-300) + 0.25yx = 375y=54total = 19.99 +0.10(375-300) +0.25(54)total = 19.99 + 0.10(75) + 0.25(54)total = 19.99 + 7.50 + 13.50total = $40.99

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