Well, we're supposed to derive a quadratic equation from the problem. After having that, we use (-b)/2a to find the value of x, which gives the max.
As for the equation, I get
N = T * 300...but I know the 300 part is wrong. I'm missing something that isn't clicking.
[b]1. A farmer grows orange trees. He has 20 trees/hectare with 300 oranges/tree. When adding another tree to a hectare, the amount of oranges decreases by ten. What is the max yield of trees. (They want to know how many trees they should have in a hectare to maximize their orange production.)...