The radius of a cylindrical cup is 6 ft and its volume is 420 cubic ft. Find the height of the cup.
A.5 ft
B.3.71 ft
C.2.98 ft
D.6 ft

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?

Which number completes the inequality? 2/3 < _ < 7/9

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years