Use the functions f(x) = 8x + 9 and g(x) = 2x − 5 to complete the function operations listed below. part a: find (f + g)(x). show your work. (3 points) part b: find (f ⋅ g)(x). show your work. (3 points) part c: find f[g(x)]. show your work. (4 points)