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## Let

Let

R = monthly revenue

x = number of student-member in excess of 60

x + 60 = total number of student-member

For number of members ≤ 60

monthly dues for each member = P10

For number of members > 60

monthly dues for each member = P(10 - 0.05x)

$R = 600 + 7x - 0.05x^2$

$\dfrac{dR}{dx} = 7 - 0.1x = 0$

$x = 70$

total number of members = 70 + 60 = 130

answer## thank you kaayu sir.

In reply to Let by Jhun Vert

thank you kaayu sir.

## way sapayan

In reply to thank you kaayu sir. by Juny Geraldizo…

way sapayan