A baseball pitcher's earned run average (ERA) can be calculated using this formula: ERA $=9$ $\cdot$ earned runs $\div$ innings pitched. Johan Santana gave up 66 earned runs in 228 innings pitched during one season. To the nearest hundredth, what was his ERA?

On a number line, graph the numbers: $\frac{9}{2}, 0.8,-5.5,-\sqrt{10},-\frac{3}{4}$

Graph the numbers on a number line. -6.2, 5.4, √5, -2.5

Explain what it means for terms to be like terms.

Jessica goes on a vacation to Mexico. She exchanges $150 into pesos and the exchange rate is$11.377$ pesos per dollar. She spends 1250 pesos. When she exchanges her remaining pesos back into dollars, how much does she get, to the nearest dollar? Explain all of your steps.

Give an example of two equivalent equations. How do you know they are equivalent?

The melting points and boiling points of lithium, carbon, nitrogen, oxygen, and magnesium are displayed, to the nearest degree. Rewrite the formula so that it provides the Celsius temperature in terms of the Fahrenheit temperature. Using the rewritten formula, convert the Fahrenheit temperatures in the table to Celsius temperatures. Note the results.

$$\begin{array}{|l|c|c|c|c|c|} \hline & \mathbf{L i} & \mathbf{C} & \mathbf{N} & \mathbf{0} & \mathbf{M g} \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{C}\right) & ? & 3500 & ? & -218 & ? \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{F}\right) & 357 & ? & -346 & ? & 1202 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{C}\right) & 1347 & ? & -196 & ? & 1107 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{F}\right) & ? & 8721 & ? & -297 & ? \\ \hline \end{array}$$

The number is a(n) _____ of the equation if substituting a number for a variable in an equation results in a true statement.

The melting points and boiling points of lithium, carbon, nitrogen, oxygen, and magnesium are displayed, to the nearest degree. Rewrite the formula so that it provides the Celsius temperature in terms of the Fahrenheit temperature. Explain each step.

$$\begin{array}{|l|c|c|c|c|c|} \hline & \mathbf{L i} & \mathbf{C} & \mathbf{N} & \mathbf{0} & \mathbf{M g} \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{C}\right) & ? & 3500 & ? & -218 & ? \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{F}\right) & 357 & ? & -346 & ? & 1202 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{C}\right) & 1347 & ? & -196 & ? & 1107 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{F}\right) & ? & 8721 & ? & -297 & ? \\ \hline \end{array}$$

Solve the formula for the variable in red. Then use the given information to find the value of the variable. Round to the nearest tenth.

Lateral surface area of a truncated cylinder

$$S=\pi r(\boldsymbol{h}+k)$$

Find $h$ if $r=2 \mathrm{~cm}$, $k=3 \mathrm{~cm}$, and $S=50 \mathrm{~cm}^2$.

The melting points and boiling points of lithium, carbon, nitrogen, oxygen, and magnesium are displayed, to the nearest degree. Duplicate the table. Using the formula $F=\frac{9}{5} C+32$, convert the Celsius temperatures in the table to Fahrenheit temperatures. Note the results.

$$\begin{array}{|l|c|c|c|c|c|} \hline & \mathbf{L i} & \mathbf{C} & \mathbf{N} & \mathbf{0} & \mathbf{M g} \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{C}\right) & ? & 3500 & ? & -218 & ? \\ \hline \text { Melting point }\left({ }^{\circ} \mathbf{F}\right) & 357 & ? & -346 & ? & 1202 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{C}\right) & 1347 & ? & -196 & ? & 1107 \\ \hline \text { Boiling point }\left({ }^{\circ} \mathbf{F}\right) & ? & 8721 & ? & -297 & ? \\ \hline \end{array}$$

Solve the inequality and graph your solution: $-5 x-6<19$

Solve the equation. Check your solution. 2d - 3 = 8d + 15

A popcorn manufacturer’s ideal weight for a bag of microwave popcorn is 3.5 ounces, with a tolerance of 0.25 ounce. Write an absolute value inequality for the acceptable weights of a bag of popcorn. Solve the inequality. What is the range of acceptable weights?