Question

4. If 3x − 1 = 11, the 2x = ?
a. 20/3
b. 2
c. 4
d. 8
e. 72

Answer 1

d. 8

Explanation:

3x − 1 = 11

add 1 to both sides

3x = 12

Divide both sides by 3

x = 4

-----------------

2x = 2*4 = 8

Answer 2

Your answer is C

Explanation:

3(4)-1 = 11