Answer:
65 pepper plants
Step-by-step explanation:
fx=25x-x²
dy/dx=0
25-2X=0
(=)X=14,5
f(4) =2
f(x) = 2х^2 - 30,
Let x=4
f(4) = 2 (4)^2 -30
= 2*16 -30
=32-30
= 2