Use the functions f(x) = 3x + 7 and g(x) = 4x − 2 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)