91Ó°ÊÓ

Use the following information. (Lesson 1-3) Cornet Cable charges 32.50 dollars a month for basic cable television. Each premium channel selected costs an additional 4.95 dollars per month. Write an expression to find the cost of a month of cable service.

Simplify each expression. $$21+(k+16)$$

A telephone tree is set up so that every person calls three other people. Jeffrey needs to tell his co-workers about a time change for a meeting. Suppose it takes 2 minutes to call 3 people. In 10 minutes, how many people will know about the change of time?

Copy each sentence. Then insert parentheses to make each sentence true. $$61-15+3=43$$

Write an algebraic expression that represents the relationship in each table. $$\begin{array}{|c|c|} \hline \text { Wruming } & \text { Total coss } \\ \hline \text { Ofitems } & \\ \hline 5 & \$ 25 \\ \hline 6 & \$ 30 \\ \hline 8 & \$ 40 \\ \hline 10 & \$ 50 \\ \hline n & ? \\ \hline \end{array}$$

Graph each ordered pair on a coordinate system. $$\gamma\left(2 \frac{3}{4}, 0\right)$$

Copy each sentence. Then insert parentheses to make each sentence true. $$5+2 \cdot 9-3=42$$

OPEN ENDED Give an example of an ordered pair, and identify the \(x\) - and \(y\) -coordinate.

Evaluate each expression for the given value. (lesson \(1-3\) ) $$19 u ; u=5$$

Explain how real-life situations can be commutative. Give an example of a real-life situation that is commutative and one that is not commutative.