X= 5 or -8
Add all the like terms and set it equal to 49, use quadratic formula or factoring.
You divid the two numbers on top to equal the bottom and the factor one out
The number of people who voted follows a binomial distribution with probability of having voted

and

subjects, which means the approximating normal distribution should have mean

and standard deviation

.
With the continuity correction, you have
I believe it’s 5, 2 you would just you 2,-2 as a line segment