David invested $3000 for five years at a rate of 9%. how much interest will he earn?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

Simplify this expression. 8x 16(x + y)