Question

In Jaunary your Verizon cell phone bill costs $12 for 80 minutes and in March your bill costs $9 for 60 minutes.

A) Determine whether the rate at which you are being charged for your phone bill is proportional to the amount of minutes being used. Explain.

Answer 1

Both rates are same when you divide them. 80/12= 6.6667 and 60/9= 6.667.

So, 6.6667 is the rate for each minute