8th Math Expressions and Equations - Quiz

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1. Simplify the expression by combining like terms.

• A. -3x + 12
• B. 9x
• C. 9.8x + 12
• D. -2x + 12

2. Which value of x makes the equation below true?

• A. x = 100
• B. x = 12
• C. x = 50
• D. x = 16

3. Which of the following answer choices shows the equation after the variables have been collected on the left and the constants have been collected on the right?

• A. -9x = 15
• B. 5x = 15
• C. 5x = 41
• D. -9x = 41

4. After making the swim team, Farrah purchased a swimsuit, a swim cap, and a pair of goggles. The swimsuit was twice as much as the goggles, and the swim cap was half the price of the goggles. If the total cost of the items was $59.50, what was the price of the swimsuit?

5. Find the value of x needed to make the equation modeled below true.

6. Solve the equation shown:

7. Solve the equation shown:

8. Solve the equation shown: