Unit 6B lesson 5 quiz

1. What is the simplified form of the expression 4x + 2x + 7x?

A) 13x
B) 12x
C) 14x
D) 11x

2. Solve the following equation for x: 3(x + 4) = 21
A) x = 5
B) x = 3
C) x = 7
D) x = 9

3. Which of the following expressions is equivalent to 5(x + 3) - 2(x - 4)?
A) 5x + 15 - 2x + 8
B) 5x + 15 - 2x - 8
C) 5x + 15 + 2x - 4
D) 5x + 15 + 2x + 4

4. If x = 6 and y = 3, what is the value of 2x + 3y?
A) 15
B) 18
C) 21
D) 24

5. Simplify the expression 2(3x + 5) - 4x:
A) 6x + 10 - 4x
B) 6x + 10 + 4x
C) 6x + 10 - 2x
D) 6x + 10 - 6x

Answers:
1. A) 13x
2. B) x = 3
3. A) 5x + 15 - 2x + 8
4. B) 18
5. C) 6x + 10 - 2x