1,4,7,10,13 which explains why there are both odd and even numbers in the patter?

What’s the numerical coefficient of 6xy

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?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)