A180-watt ihome® is used on an average of three hours a day. find the cost of listening to the ihome for one week at a cost of $0.13 per kilowatt-hour. a. $0.49 b. $11.34 c. $491.40 d. $0.07

The answer is:

The correct option is:

A. $0.49

From the statement, we know that the iHome is used on average three hours a day, and we are asked to find the cost for a week, so first, we need to calculate the total hours that the iHome is used for, and then, calculate the kilowatt-hour consumption rate.

Now, we must remember that:

So,

Then, calculating the cost, we have:

Hence, we have that the correct option is:

A. $0.49

Have a nice day!

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.