A car that has a weight W is on an inclined plane with an angle of pi/12. A cable is holding the car in place. What is the tension on the cable in terms of the car's weight?

What is the greatest common factor of 6a, 8a^{2}, and 14?

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 of the following is not a subset of {1,2,3}?