Let's look at all our constraints and find figure out what our answer is.
Since everything here is division, everything is a quotient of 2 quantities, so that doesn't help us. For the next one, our numerator should be the product (signifies multiplication) of 5 and the sum of x and y. That looks like:
5(x + y)
If we look at the last constraint, we see that denominator is a product, or multiplying -8 and x, which looks like -8x.
Therefore, our answer must be A. It fulfills all the constraints, unlike the others.
