Factor 63b+81. Write your answer as a product with a whole number greater than 1.

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube