What is the volume of the right rectangular prism?

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 the range? can’t seem to find it out

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4