If an interior angle of a regular polygon is 120, what is the measure of one exterior angle?

The interior and exterior angles are supplementary, adding to 180 degrees, so the exterior angle is

60 degrees

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 !