Mathulator

Thanks a ton! 

P.s. it's meters not feet

I believe the answer you provided was incorrect although I could be mistaken. I believe the equation is (y2-y1)/(x2-x1).

The answer is $\boxed{4^{50}}$, and here's why.

We have 50 people, and four people to vote for. Let's see how many possibilities for a single person. The person can vote for person A, B, C, or D, thus meaning there are four options for a single person. Remember that one person's vote does not affect another; for example if thirty-nine people voted for person C, it does not make the fortieth person any more likely to vote for person C, all probabilities are independent.

So we have $4^1$ for the first person, because there is one person voting. But each time we have more people vote, the options increase. If we had two people voting, there would be $4\cdot4$ options or $4^2$. This pattern goes on for every single vote, meaning that by the end, we will have $\boxed{4^{50}}$ options.