Use the functions a(x) = 3x + 10 and b(x) = 2x − 8 to complete the function operations listed below. part a: find (a + b)(x). show your work. (3 points) part b: find (a ⋅ b)(x). show your work. (3 points) part c: find a[b(x)]. show your work. (4 point