What is the solution set of the quadratic inequality

Which statement about the graph of y = 8(0.25)^2

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?

Find the solutions for a triangle with a =16, c =12, and b = 63º