Question

Which of the following values in the set below will make the equation 4x + 2 = 18 true? (Only input the number.)

Numerical Answers expected!
{0, 1, 2, 3, 4}

Answer 1

• 4.

Explanation:

1:

Solve 4(1) + 2 = 18:

• 4(1) + 2 = 18
• = 4 + 2 = 18
• = 6 ≠ 18.

1 is false.

2:

Solve 4(2) + 2 = 18

• 4(2) + 2 = 18
• = 8 + 2 = 18
• = 10 ≠ 18

2 is false.

3:

Solve 4(3) + 2 = 18

• 4(3) + 2 = 18
• = 12 + 2 = 18
• = 14 ≠ 18

3 is false.

4:

Solve 4(4) + 2 = 18

• 4(4) + 2 = 18
• = 16 + 2 = 18
• = 18 = 18.

4 is true.

Correct answer is 4.

Answer 2

4

Explanation:

4 (4) + 2 = 18

16 + 2 = 18

18 = 18