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If I have 15.00 to spend on a phone bill each month what is the maximum number of calls I can make if the service cost 9.00 and it is $0.45 per call. Translate into inequality and solve.

3 answers

What do you think?

9 +.45 (C)<=15.00
.45C<=6
C<=13
13 calls

13 is right.

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