The cost of phone plan Q is $10 per month plus &0.14 per minute.phone plan R costs $7 per month plus $0.17 per minute.if Anthony talks on the phone for 70 minutes in a month,which plan is less expensive for Anthony,and by how much

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ISBN:9780470458365
Author:Erwin Kreyszig
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The cost of phone plan Q is $10 per month plus &0.14 per minute.phone plan R costs $7 per month plus $0.17 per minute.if Anthony talks on the phone for 70 minutes in a month,which plan is less expensive for Anthony,and by how much
Expert Solution
Step 1

Let x  denotes the number of minutes.

Then cost of plan Q is 

Qx=10+0.14x

Q70=10+0.1470Q70=19.8

So, the cost of plan Q per month for 70 minutes is $19.8

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