What do i do to solve this?
"a plot of land is in the shape of a triangle. if one side is x meters, a second side is (2x-3) meters, and a third side is (3x-5) meters, express the perimeter of the lot as a simplified expression in x."

First let's write it down, 

 x + (2x - 3) + (3x - 5) 

Then remove the parentheses

 x + 2x - 3 + 3x - 5 

 first combine the x + 2x = 3x to obtain: 3x - 3 + 3x - 5 

 then combine the 3x + 3x = 6x to obtain: 

 6x - 3 - 5 

rewrite 6x - 3 - 5 as 6x + (-3) + (-5) 

And the answer would be 6x + (-8) = 

6x - 8

I hope my answer helped you 

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

you should talk someone who owns the website about it. you did not deserve to have all that hard work and time taken away. id watch videos of little puppies to cool you down, and maybe some nacho cheese doritos.