What is the height of a cylinder with a volume of 1,899.7 cubic inches and a radius of 11 inches? (Use 3.14 for π.)

5 inches
6 inches
7 inches
8 inches

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

What is the value of the expression below? (81^2)^1/8

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)