A space shuttle orbits Earth at a rate of about 4,375 miles in 15 minutes. At this rate, how far does the space shuttle travel in 60 minutes?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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 for x and y: 217x + 131y = 913; 131x + 217y = 827