Simplify each expression. See Example 8. 10 - (4y + 8)

Simplify each expression. See Example 8. 10x (3)(y)

Simplify each expression. See Example 8. -2⁄3 (12w) (7z)

Simplify each expression. See Example 8. 3(m - 4) - 2(m + 1)

Given the equations of two lines $y=2x+1$ and $y=-x+4$, determine whether the lines intersect. If they do, find the point of intersection.

Determine whether each equation is an identity, a conditional equation, or a contradiction. Give the solution set. See Example 4. 4(2x + 7) = 2x + 22 + 3(2x + 2)

CONCEPT PREVIEW Fill in the blank(s) to correctly complete each sentence. The opposite, or negative, of a number is its _______.

For what value(s) of x is |x| = 4 true?