Question

If the cost of an 800 number is $29.95 per month plus 28 cents per minute, then the monthly cost varies directly as the number of minutes.TrueFalse

Answer 1

We have the monthly cost is fixed: $29.95.

The cost varies directly as the number of minutes since the total cost per month will be:

`29.95+(28)/(100)x`

If we make a call and spend 30 minutes. We need to add this cost to the payment: