Hi, I have another question

600+105x ≤ 750+80x

what is x?

the answer key says it x≤ 6; however, they didn’t change the sign when dividing both sides.

the answer I got was x≥6

(I also wanted to mention that I asked two questions and they are both from the deleted practice test 4. Do you know why practice tests 2 and 4 are deleted? Would it be because there are mistakes?)

The algebra here is:

You don’t need to flip the inequality when you divide because you only flip the inequality when you’re dividing or multiplying by a negative number, and 25 is positive.

There are no *mistakes* that I know of in tests 2 and 4. I think they just got retired because while they’re not bad, they’re also not *real* tests, and College Board eventually released enough real ones that they didn’t feel like they needed to have all of the original batch of practice tests hanging around anymore.