S=50x-x^2
dS/dx=50-2x
d2S/dx2=-2
Since acceleration is a constant negative, when velocity equals zero, it is at the absolute maximum point for S(x)...
dS/dx=0 only when 50-2x=0, 2x=50, x=25
So the price that will maximize income is $25.00 a seat.
And that maximum income is:
S(25)=50x-x^2
S(25)=$625.00
The correct answer would be b.25
18+12*4=18+48=66 ft
1st floor is 18ft
next 4 are 12ft
Answer:
A. 36
Step-by-step explanation: