cost= .18 per minute x 60 minutes

18 x 60= 10800

Decimal points are necessary.

0.18 * 60 = $10.80

To calculate the total cost for 60 minutes at a rate of $0.18 per minute, you can multiply the rate by the duration.

Mathematically, it would look like this:

Cost = Rate x Duration

In this case, the rate is $0.18 per minute, and the duration is 60 minutes.

So, plugging in the values:

Cost = $0.18 x 60

Calculating this expression yields:

Cost = $10.80

Therefore, the total cost for 60 minutes at a rate of $0.18 per minute is $10.80.