A phone company charges a monthly rate of $12.95 and $0.25 a minute per call. If the bill for this month totaled $21.20, how many minutes were charged on this bill?

**Let the variable represent what is to be found.**

**x = number of minutes**

0.25x + 12.95 = 21.20 {price per minute times number of minutes plus monthly rate equals total bill}

0.25x = 8.25 {subtracted 12.95 from each side}

x = 33 {divided each side by 0.25}

**33 minutes were charged**

**Ask the House**