Question

Which of the following is not a solution for the inequality 3x +2 < 12?

A. x = 2
B. x = 2.5
C. x = 3
D. x = 3.5

Answer 1

3.5

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5INGH

Explanation:

3 x + 2 < 12

( -2 from both sides )

3 x < 10

( ÷ 3 from both sides )

x < 3.33333333333

So x is less than 3.33333333333 but the question asks which is not a solution and 3.5 is greater than 3.33333333333 so 3.5 is your answer

Answer 2

Explanation:

3x + 2 < 12

3x < 10

x < 10/3

x < 3 1/3

D. x = 3.5, because 3.5 > 3 1/3 and x can't be bigger than 3 1/3