91Ó°ÊÓ

Find the value of each expression. $$32-24 \div 2$$

The table shows the number of people in a family and the number of telephone calls made per week. $$\begin{array}{|l|c|c|c|c|c|c|c|c|c|c|c|c|c|} \hline \text { Number in Family} & 5 & 1 & 4 & 2 & 4 & 6 & 3 & 4 & 7 & 3 & 5 & 8 & 2 \\ \hline \text { Number of Calls } & 31 & 8 & 26 & 9 & 18 & 34 & 13 & 10 & 25 & 15 & 20 & 36 & 15 \\ \hline \end{array}$$ Does the scatter plot show a relationship between the number of people in a family and the number of telephone calls made per week? Explain.

Find the value of each expression. $$6(15-4)$$

Find the value of \(k\) that makes \(6=\frac{48}{k}\) true. \(\mathbf{A} 6\) \(\quad\) \(\mathbf{B} 7\) \(\quad\) \(\mathbf{C} 8\) \(\quad\) \(\mathbf{D} 12\)

Find the value of each expression. $$2[3+7(4)]$$

The Geiger family is driving at an average speed of 55 miles per hour. The table shows the relationship between the distance driven and the time. $$\begin{array}{|c|c|}\hline \text { Time \(t\) } & \text { Distance \(d\) } \\\\\hline \text { (hours) } & \text { (miles) } \\\\\hline 1 & 55 \\\\\hline 2 & 110 \\\\\hline 4 & 220 \\\\\hline 5 & 275 \\ \hline\end{array}$$ Given \(t,\) the time in hours, write an equation that can be used to find \(d\), the distance driven.

Determine whether a scatter plot of the data for the following might show a positive, negative, or no relationship. Explain your answer. temperature and heating costs

Write a numerical expression for each verbal phrase. the difference of twelve and nine

Write a numerical expression for each verbal phrase. the sum of eleven and sixteen

Define a variable. Then write an equation and solve. The sum of 7 and a number is \(23 .\)