Question

Optimization help?

Answer 1

http://prntscr.com/3983to

Answer 2

That's finding the maximum of \(\dfrac{kN}{25+N^2}\)

Answer 3

make it a quadratic and use the condition of vertex of graph

Answer 4

Or you can just take derivative of it in respect to N then set it equal to 0 and find N. then plug in that value to original function.