B. What value of x will make the equation f(x) = 22 true?

Can someone check my answer? you : )

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

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