Identify the terms, the coefficients, and the constant(s) in the expression $-7 t+6 v+7-19 y$.

Simplify each expression. $-1\left(\frac{b}{9}\right)+\left(-\frac{b}{9}\right)$

What is the sign of a negative number raised to an odd power? Explain.

Do you think a negative number raised to an even power will be positive or negative? Explain.

Simplify the expression.

$$\begin{array}{llll}(-2)^2 & (-2)^3 & (-2)^4 & (-2)^5 \\ (-3)^2 & (-3)^3 & (-3)^4 & (-3)^5\end{array}$$

Simplify each expression. $8 x y z+4 x y-12 y z x+2 x y$

Find the mean, median, and mode of each set of numbers.

$$1 \begin{array}{llllll}8 & 9 & 11 & 22 & 34 & 34\end{array}$$

Simplify. $-11+(-124)$

Simplify.

$$\left[\begin{array}{r}1.3 \\ -6.7 \\ 7.1\end{array}\right]+\left[\begin{array}{r}-0.1 \\ 4.2 \\ -1.9\end{array}\right]$$

Simplify each expression. $3\left(\frac{a}{7}\right)+7\left(\frac{a}{3}\right)$

Reasoning Does $|a b|$ always equal $|a| \cdot|b|$ ? Explain.

Simplify each expression. $1.4 b-3 b^2+4 c-2 b^2+c$

Simplify.

$$\left[\begin{array}{ll}3 & -8 \\ 2 & 11\end{array}\right]+\left[\begin{array}{rr}1 & 8 \\ -2 & 5\end{array}\right]$$

Simplify. $-4 \frac{6}{10}+3 \frac{2}{5}$