Review for Test Chapter 7A

Solve the equation.

 $4-10x=-6$  

• 1

•  $-\frac{2}{5}$  

•  $\frac{2}{5}$  

•  $-1$  

Decide whether the statement translates into an expression or an equation.

22 is 11 more than a number.

• Equation

• Expression

Determine the ratio and write it in lowest terms.

68 feet to 32 feet.

• $\frac{17}{8}$

• $\frac{8}{17}$

• $\frac{11}{23}$

• $\frac{23}{11}$

Match the inequality with its correct representation.

{x | x > 8}

•  $\left(8,\ \infty\right)$  

•  $\left(-\infty,\ 8\right)$  

•  $\left(8,\ -\infty\right)$  

•  $\left(\infty,\ 8\right)$  

Solve the equation.

 $5(y+7)=6(y-5)$  

• 65

•  $-65$  

• 5

•  $-5$  

Translate the verbal phrase into a mathematical expression. Use x to represent the unknown number.

A number minus 91.

• $x-91$

• $x+91$

• 91

• $91x$

Tell which brand or which size is the better buy.

Brand X: 6 oz for $1.80

Brand Y: 4 oz for $1.16

• Brand Y

• Brand X

• Equal value

• Not enough information

Solve the inequality, giving its solution set in both interval and graph forms.

 $f+6<3$  

• 
• 
• 
• 

Solve the equation.

 $\frac{2x}{5}-\frac{x}{3}=5$  

• 75

•  $-75$  

• 150

•  $-150$  

Let x represent the unknown, and write an equation for the sentence. Do not solve.

Four times a number added to 9 times the number equals 65.

• $4x+9x=65$

• $4x-9x=65$

• $4x(9+x)=65$

• $4(x+9)=65x$