You get $84 each month from your mom for your cell phone bill. the base fee each month is $27 plus $0.15 per minute. what is the maximum number of minutes you can use your cell phone each month?

So, to figure out this problem you first need to solve for how much you have left after paying the base fee. Take the total ($84) and subtract by the base fee ($27). You will get 57 as your answer. Then, take $57 and divide it by $0.15 to get your answer. It is 380 minutes each month. The equation here is 84=27+0.15x.