An office firm estimates that total savings in dollars by converting to solar heating system will be D (x) = 365 - 73/240 X raised to the power of 3.
a) Determine the value of x that would give the maximum savings; and
b) Calculate the maximum savings possiblle.

Question

dumbcow · Answer

is this correct
$$D(x) = 365-(73/240)x ^{3}$$

anonymous · Answer

yes

dumbcow · Answer

to maximize D, differentiate and set equal to 0
then solve for x

dumbcow · Answer

did you figure it out?
use power rule to find derivative

anonymous · Answer

No can you work it out for me. Thanks