Y=2x+5 (B) You have to bring 8x to the other side of the equal sign (by addition) and divide both sides by 4.
The answer is A) x = 9
We know this because every four sided figure has angles that measure up to 360. So we can subtract all of the angles and then use the remaining angle to solve the problem.
360 - 90 - 90 - 99 = 81.
So with the remaining angle being 81, we can solve for x.
x^2 = 81
x = +/-9
Since +9 is the only answer that makes sense in this case, x = 9.
Divide both values.
12/4 = 3
3 is how much stunts per movie.
Answer: 3 stunts in one movie