For the expression use a equals three B equals five and C equals six

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?

Which expression and diagram represent “renee biked four times as far this month as last month”?

An object in geometry with no width, length or height is a(n):