What’s the answer to this ?

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Which of the following is not a subset of {1,2,3}?