Question 1078727
Let x=each additional tree.
(630-15x)(20+x) is the equation.
Maximize 12600+330x-15x^2=0
The vertex is -b/2a=-330/-30=11 for x
31 trees, 465 oranges per tree (630-(15*11))
14415
{{{graph(300,300,-10,30,-500,16000,-15x^2+330x+12600)}}}