What is f(4) for the function f(x)=5x 9?

Which expressions are equivalent to -6 + 3m

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base