Express as a fraction or mixed number. 30 ÷ 19

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?

Abcd is a square. what is the measure of angle bac

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!