PLEASE HELP IF YOU CAN!!:)

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?

Use the graph of the sine function y=2sinθ shown below

Identify the parent function that can be used to graph the function f(x)=3(x-9)2