How do you do this？I have a test soon that I can't fail

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?

What is coefficient of the term of degree of degree 5 in the polynomial below

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?