Use <,>, or = to make true number sentences without calculating. Explain your thinking. 2/3 x (9 + 12)
15 x 2/3

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]