Multiply 7(-2x • -2x + 2x-2)

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

36 inches/second = yards/minute how many yards?

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?