What inequalities could represent the number line

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 multiplicative inverse of 8-12i

Which statement about the annual percentage rate (apr) is not true?