Your question seem to me non-understandable. Are they adding up together ?
or multiplying ?
-4 + x 2 + y
------- = 5 and ------ = 5
2 2
so x = 10 + 4 = 14 and y = 10 - 2 = 8
endpoint N = (14,8)


<---How much is produced by all the trees in a year.
They want how much each day so divide by 365


<---answer per day