Your friend borrows $100 from you and promises to pay you back $109 in 8 months. what annual percentage rate (a. p.r.) are you charging your friend? round to the nearest tenth of a percent and write the answer as a decimal

You are charging 13.5% annual percentage rate to your friend .

Step-by-step explanation:

Principal = $100

Amount = $109

Time = 8 months

12 months = 1 year

1 month =

8 months =

So, Time =  

SI = Amount - Principal = $109-$100=$9

Formula :

Hence you are charging 13.5% annual percentage rate to your friend .

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !