Since they are vertical they are equal to each other.
3x + 4 = 7x - 9
4 = 4x - 9
13 = 4x
3.25 = x
So the value of x is 3.25.
Hope this helps :)
No because the perimeter of a rectangle is L×W or (2L+2W) , but the perimeter of a square is S×S×S×S so there is a difference between the two.
350 + 275 + 35 + movies and popcorn= 710
660 + movie and popcorn = 710
Movies and popcorn = 710 - 660 = 50
$50