Answer: $34.85
Step-by-step explanation: $41 x 15%= 34.85 before tax
Let width of the rectangular plot be x meters
then total of widths = 2x
and the length would be (550 - 2x) meters.
so the area = x(550 - 2x) = 550x - 2x^2
to find the maximum are find the derivative and equate to zero:-
f'(x) = 550 - 4x = 0
x = 550/4 = 137.5 meters = width
length = 550 - 2(137.5) = 275
Maximum area is when width = 137.5m and length = 275m
85/136 x 100 = 8500/136 = 62.5%
i think its 1/3 because you solve for y and slope is whatevers in front of x