HELP PLZ!! The price of a radio was discounted 20% on the first day of a sale. The sale price was then discounted an additional 20% on the second day.
What percent is the combined discount?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

What’s the volume of the triangular prism?

Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.