Can someone pretty please help me... it’s only 2 questions! :(

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Could somebody me with this radical simplification?

The table shows values for functions f(x) and g(x) . x f(x)=−4x−3 g(x)=−3x+1+2 −3 9 179 −2 5 53 −1 1 1 0 −3 −1 1 −7 −7 2 −11 −25 3 −15 −79 what is the solution to f(x)=g(x) ? select each correct answer.