Unit 2 Review - Expressions, Equations and Inequalities

Which of the following equations is equivalent to 36 – 12x ÷ 3 = 8

• 12 - 4x = 8

• 36 - 4x = 8

• 8x = 8

• 32x = 8

Tags

CCSS.8.EE.C.7A

Simplify:
 $2.25x\ +\ \left(-1.4y\right)\ +\ \frac{1}{2}x\ +\ \frac{4}{5}y$  

• 2.75x + 0.6y

• 2.75x - 2.2y

• 2.75x + 2.2y

• 2.75x - 0.6y

Tags

CCSS.7.EE.A.1

Simplify:
 $\frac{1}{6}a\left(14\ +\ 10\right)\ -\ 2a\ +\ 7$  

• 2a + 7

• 6a + 7

• 9a

•  $2\ \frac{1}{2}a\ +\ 7$  

Tags

CCSS.6.EE.A.3

 $\frac{1}{9}z\ =\ \frac{5}{9}$  

•  $z\ =\ \frac{5}{81}$  

• z = 5

• z = 9

• z = 3.5

Tags

CCSS.6.EE.B.7

Each answer choice below shows an equation and a value for x. Which of the following are true? Select three that apply.

• If 6(x + 5) = 12, then x = -3

• If 8x - 3 = 37, then x = 4

• If 7(2x - 4) = 28, then x = -2

• If 3x - 9 = 24, then x = 11

• If 5(x - 2) = -10, then x = 0

Tags

CCSS.6.EE.B.5

Which of the following expressions are equivalent to 18x + 30 – 6? Select three that apply.

• 36x

• 18x + 24

• 6(3x + 4)

• 2(9x + 18)

• 3(6x + 10) - 6

Tags

CCSS.6.EE.A.4

Bill wants at least 200 worms in his worm farm. He currently has 40 worms and knows he can buy worms in groups of 8. Which inequality and solution represent the number of groups of worms that Bill wishes to buy? Select TWO that apply.

• $40\ +\ 8g\ \ge\ 200$ $g\ \ge\ 20$

• $8g\ +\ 40\ \le\ 200$ $g\ \le\ 40$

• $200\ \le\ 8g\ +\ 40$ $20\ \le\ g$

• $200\ \ge\ 40\ +\ 8g$ $40\ \ge\ g$

• $200\ \le\ 40\ +\ 8g$ $20\ \ge\ g$

Howie has a job and earns $12.24 per hour. One week, he works 25 1/4 hours. He deposits $300 in a bank and decides to use the rest of the money to buy cookies. Each cookie costs $0.50. How many cookies can Howie buy?

• 9

• 12.4

• 18

• 24

Tags

CCSS.7.EE.B.3

A store is having a discount of 60% on all socks. Let x represent the regular price of any pair of socks in the store. Enter an expression that can be used to find the sale price of any pair of socks in the store.

• 0.4x

• 0.6x

• 0.6x - x

• $\frac{0.4x}{x}$

Tags

CCSS.HSA-SSE.A.1A

Between which of the following pairs of rational numbers is 2/9 found on a number line?

•  $\frac{1}{5}$  and 22%

• 0.21 and  $\frac{11}{50}$  

•  $\frac{1}{4}$  and 0.26

•  $\frac{2}{10}$  and 23%

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B