The answer for your question is C. Orthocenter :)
Apply the distance formula
except if you use the starting point of (0,0), its essentially an application of pythagorean theorem
x2 would be 15*t
y2 would be -36*t
and d would be 24
writing it all out would be
24^2= (15t)^2 + (-36t)^2
in which case, just expand, and solve for t
any questions?
You can solve this with a calendar. So you need to count 90 days until the 90th day which is November 22,2016.
x+7>=12
Hope this helps?
Can you mark my answer as brainliest please?