David is building wooden picture frames. Each fame requires 3/4 feet of wood. If David started with 12 feet of wood and now has 6 feet of wood remaining, how many picture frames has he built?

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?

Find an equation for the linear function which has slope -10 and x-intercept -7

Nine more than four times a number is the same as one less than twice the number. find the number?