Midpoint and segment question

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?