Question

What is the solution of 3x+9<15

Answer 1

Third one

Explanation:

Two things to solve 3x+9 <= 15

3x <= 6

x <= 2

and - (3x+ 9) <= 15

- 3x - 9 <= 15

- 3x <= 24

3x >= -24

x > = - 8

s o -8 <= x <= 2

Answer 2

-8 ≤ x ≤ 2

Explanation:

Hello!

The absolute value expression gives us two scenarios:

• 3x + 9 ≤ 15
• -(3x + 9) ≤ -15

We have to solve for x in both equations.

3x + 9 ≤ 15

• 3x + 9 ≤ 15
• 3x ≤ 6
• x ≤ 2

-(3x + 9) ≤ 15

• 3x + 9 ≥ -15
• 3x ≥ -24
• x ≥ -8

So x is less than or equal to 2, and x is greater than or equal to -8.

The sandwich inequality would be -8 ≤ x ≤ 2.