Answer the following question, with explanation first.
Noah, who loves his Grammy, calls her every week to talk about his day. If each call lasts 30 minutes and he is charged $0.05 per call minute, how much would he be billed if he makes the calls for a year?

78
A year has 52 weeks, so if he talks for 30 minutes every week, the total number of call hours is 52 * 30 = 1560 minutes.

Since he is charged 0.

05 cents per call, the total cost is 1560 *.

05 = 78 dollars.

.

Thus, the answer is 78