7th grade math, circles and ratios. I don't get it. please check the ones I did and didn't do.

What is the answer to |-2x-5|-|-4+8| and x=7

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.