Topic: Perimeter and Area Progress:
The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer
Calculate the perimeter of the square with side length of 5.5 ft.
25.25 ft
C 22 ft
30.25 ft
11 ft

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.