What is a plus c plus a plus 54 plus86

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path