A stop sign in the shape of a regular octagon is resting on a brick wall, as shown in the
accompanying diagram.
STOP
X
What is the measure of angle x?

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

1foot = 12 inches; 1 yard = 3 feet

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?