Question

You just purchased a cellular phone and are trying to determine to which cell phone company you will give your business. When you contacted the Talks-A-Lot Company, they were offering a monthly plan of $40 for 600 minutes and $0.35 for each minute exceeding the 600 minutes.

How would I find...
total cost (y) = base fee + cost per min times # of minutes exceeding 600

Answer 1

y = 40 + ( x - 600 ) .35