Apair of dice is rolled. what is the probability of getting a sum of 3?

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?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)