4. Perform the requested operation or operations. f(x) = 4x + 6, g(x) = 5x2 Find (f + g) (x). (5 points) O 20x3 + 30x O 4x + 6+ 5x2 4x + 6 -5x2 O 4x + 6 5x2 5. Perform the requested operation or operations. 7 f(x) = X- ; g(x) = 7x + 8, find g(f(x)). (5 points) O g(f(x)) = x + 16 O g(f(x)) = 7x + 48 g(f(x)) = x- 8 O g(f(x)) = x 6. Find f(x) and g(x) so that the function can be described as y = f(g(x)). (5 points) 8 y = V2x + 4 O f(x) = 8, g(x) = V2x +4 Of( x) = 2x +4 , g(x) = 8 X O f(x) = 3 , g(x) = 2x + 4 Of(x ) = 8 VX = . g(x) = 2x + 4