How do I solve for X and whats the answer?

x is -10.

Step-by-step explanation:

Alright, first you have to leave x/10 alone, to do that add 3 to both side -3 and 3 cancel out and -4 plus 4 is -1. Then, you have x/10 equals -1. You want to isolate x, so you multiply each side by 10. 10 multiply and divide cancel each other out, and 10 times -1 is -10. Therefore, x equals -10. You are basically doing PEMDAS, but backwards to find x. Because you added first, then you multiplied. Hope this helps!

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.

step-by-step explanation:

b and c