This is actually a lot more than just 2 questions, but I'll do my best to answer them all to the best of my ability for you.
Substituting 9 into the first inequality, we get: 9 + 15 < 22
On the left side of the inequality, we have 9 + 15, which equates to 24.
Now, we look at the inequality again, 24 < 22.
This is saying that 24 is less than 22. This is not true and therefore false. A number that would make this inequality true would be any whole number value less than 7. So, x = 6 would be an acceptable answer.
For the second part, we have to substitute 3 into the equation and we get: 4(3) = 12.
On the left side of the equation, we have 4(3) = 4 • 3 = 12.
Now, look at the equation one last time: 12 = 12.
This is saying that 12 is equal to 12. This is true so we are done.
For the third part, we have to substitute 4 into the inequality and we get: 20 < 5(4).
We have to simplify the right side of the inequality: 5(4) = 5 • 4 = 20.
Now, look at the inequality again and it should look like this: 20 < 20.
This is saying that 20 is less than 20. This is not true because 20 is EQUAL to 20 and is therefore false. A number that would make this inequality true is any whole number greater than 4. So, an acceptable answer for h would be 5.
I think you need better formatting for the second question for it to be properly read. If you'd like to resubmit the question or message me with the question reformatted I would be willing to help!