When multiplying exponents do you add them.

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges