(01.04 MC)Simplify the following expression: (−1)(−7)(4)

12
28
−12
−28

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 lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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