What must be added to 3x-7 to make x^24x-1

You need to add:  x2+x+6

Let the unknown part be represented by A

Then we have:  3x−7+A=x2+4x−1

Subtract 3x from both sides

−7+A=x2+4x−3x−1

but 4x−3x is giving:

−7+A=x2+x−1

Add 7 to both sides

A=x2+x+6

So you need to add: x2+x+6

coin flip

non-answer:

choosing

sorry if this isnt what you're looking for i dont really understand the question

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.