How should i write an expression ? : /

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?

Ihonestly have no clue if it's each or none.

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume