Hi!
The answer should be third option.
[tex]20+4j\ge 2\left(j+20\right)[/tex]
[tex]20+4j\geq 2j+40[/tex]
[tex]20+4j-20\geq 2j+40-20[/tex]
[tex]4j\geq 2j+20[/tex]
[tex]4j-2j\geq 2j+20-2j[/tex]
[tex]2j\geq 20[/tex]
[tex]\frac{2j}{2}\geq \frac{20}{2}[/tex]
[tex]Answer ---> j\geq 10[/tex]
Explanation: First you had to subtract by the 20 from both sides. Then simplify it gave us 4j ≥ 2j+20. You can also subtract by the 2j from both sides. Then simplify its going to be 2j≥20. Next, you can also divide by 2 from both sides, and it gave us the answer is j≥10 is the right answer. Hope this helps! And thank you for posting at here on Brainly. And have a great day. -Charlie
