Question

Which of the following values are solutions to the

inequality 9 ≤ 3x +4?
I. - 7
II. 8
III. 2

Answer 1

II. 8

III. 2

Explanation:

Solving an inequality

9 ≤ 3x +4

Subtract 4 from each side

9-4 ≤ 3x +4-4

5 ≤ 3x

Divide each side by 3

5/3 ≤ 3x/3

5/3 ≤ x

x must be greater than or equal to 5/3

I. - 7 this is not greater than or equal to 5/3

II. 8 this is greater than or equal to 5/3

III. 2 this is greater than or equal to 5/3