Chapter 4

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$x+6=14$$

Solve the equation. $$ -2 z=-26 $$

Find the quotient. $$ \frac{1}{8} \div \frac{1}{2} $$

Find the slope of the line that passes through the points. \((2,4)\) and \((4,-4)\)

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$9-y=4$$

Solve the equation. $$ \frac{2}{3} t=-10 $$

Find the quotient. $$ -20 \div\left(\frac{25}{2}\right) $$

Find the slope of the line that passes through the points. \((0,6)\) and \((8,0)\)

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$7 b=21$$

Solve the equation. $$ 6 c=-96 $$

You have one hour to make cookies for your school bake sale. You spend 24 minutes mixing the dough. It then takes 12 minutes to bake each tray of cookies. If you bake one tray at a time, which model can you use to find how many trays you can bake during the hour? (Lesson 3.5) A. \(x(24+12)=60\) B. \(12 x+24=60\)

Find the slope of the line that passes through the points. \((4,1)\) and \((6,1)\)

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$\frac{a}{4}=3$$

Solve the equation. $$ -\frac{p}{7}=-9 $$

Round to the nearest cent. $$ \$ .298 $$

Find the slope of the line that passes through the points. \((0,-6)\) and \((8,0)\)

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$\frac{1}{3} h-2=1$$

Write the decimal as a percent. $$ 0.15 $$

Round to the nearest cent. $$ \$ 1.649 $$

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$3 x-12=6$$

Write the decimal as a percent. $$ 0.63 $$

Round to the nearest cent. $$ \$ .484 $$

Find the slope of the line that passes through the points. \((0,0)\) and \((4,5)\)

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$2(v+1)=4$$

Write the decimal as a percent. $$ 0.5 $$

Round to the nearest cent. $$ \$ 8.357 $$

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$3(x-1)=-18$$

Round to the nearest cent. $$ \$ 7.134 $$

solve the equation. (Lessons 3.1, 3.2, and 3.3) $$5(w-5)=25$$

Write the decimal as a percent. $$ 0.005 $$

Round to the nearest cent. $$ \$ 3.152 $$

You are studying the atomic numbers and weights of elements. You record several pairs in a table. Make a scatter plot. Then describe the relationship between the atomic numbers and the atomic weights. (Lesson 4.1) $$ \begin{array}{|c|c|c|c|c|c|c|c|} \hline \text { Element } & {\mathrm{H}} & {\mathrm{He}} & {\mathrm{Li}} & {\mathrm{Be}} & {\mathrm{B}} & {\mathrm{C}} & {\mathrm{N}} & {\mathrm{O}} \\ \hline \text { Atomic Number } & {1} & {2} & {3} & {4} & {5} & {6} & {7} & {8} \\\ \hline \text { Atomic Weight } & {1.0} & {4.0} & {6.9} & {9.0} & {10.8} & {12.0} & {14.0} & {16.0} \\ \hline \end{array} $$ Note: The abbreviations above are for the following elements: Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, and Oxygen.

Write the decimal as a percent. $$ 1.27 $$

Round to the nearest cent. $$ \$ .005 $$

You have 32 coins in a jar. Each coin is either copper or silver. You have 8 more copper coins than silver coins. Let c be the number of copper coins. Which equation correctly models the situation? (Lesson 3.5) $$A. (c-8)+c=32$$ $$B. c+(c+8)=32$$

Round to the nearest cent. $$ \$ 5.109 $$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{1}{8}+\frac{1}{5}$$

Write the decimal as a percent. $$ 8.6 $$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{2}{3}+\frac{4}{5}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{3}{4}+\frac{8}{9}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{9}{11}+\frac{10}{33}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{6}{7}+\frac{3}{8}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{1}{4}+\frac{5}{6}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{2}{3}+\frac{8}{21}$$

Write the answer as a fraction or as a mixed number in lowest terms. (Skills Review p. 764) $$\frac{19}{24}+\frac{11}{12}$$