Question

Use the distributive property to evaluate 4(2x−1) when x=3.

Select one:
a. 4
b. 16
c. 20
d. 23

Answer 1

For this case we have the following expression:
4 (2x-1)
For x = 3 we have:
4 (2 (3) -1)
Rewriting:
4 (6-1)
Using distributive property we have:
4 * 6 - 4 * 1
Rewriting
24 - 4 = 20
Answer:
Therefore, the correct answer is:
c. 20