SOLUTION: In a certain city, the monthly cost of telephone service is given by the function C = 0.10n + 12, where n is the number of calls, 10� is the cost per call, and $12 is a fixed c

Question 1070468: In a certain city, the monthly cost of telephone service is given by the function
C = 0.10n + 12,
where n is the number of calls, 10� is the cost per call, and $12 is a fixed charge.
Find the cost of making 30 calls in a month.
Found 2 solutions by josmiceli, josgarithmetic:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

$15/month is the cost

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
n=30.
Evaluate C.
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