Need help with writing (-3a^5)^2(2ab^3) in simplest form using properties of exponents. Thank you.

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Measure of angles 31 (x+4) (3x+9) me

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall