Cataloged 2/3 of new books in shipment. is she has cataloged 52 books what is the number of books shipped in total

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?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Icould really use some with this question.