The answer would be 507355
The distance formula is d=\sqrt{(x_{2}, x_{1})^{2} +(y_{2}, y_{1})^2
7=x1
4=y2
-8=x2
4=y2
Just plug in the missing values into the equation and solve the equation :)
I think its A but in inxtinct it telling me D so i would go with it as the correct answerr
Hope this helps
Answer:

Step-by-step explanation:
Neither of those work for that equation