Mr. randall bought 4 shirts, which were on sale. the shirts were originally priced $20 the sales price of the shirts was $5 less than the original price write and find the value of an expression for the total amount that mr. randall paid for the shirts.

Arectangular prism is 3 meters long, 6 meters wide, and has a height of 9 meters. what is its surface area?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Hormones perform important functions within the reproductive system. during puberty, a number of changes occur in the body. which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone