Let width and length be x and y respectively.
Perimeter (32in) =2x+2y=> 16=x+y => y=16-x
Area, A = xy = x(16-x) = 16x-x^2
The function to maximize is area: A=16 x-x^2
For maximum area, the first derivative of A =0 => A'=16-2x =0
Solving for x: 16-2x=0 =>2x=16 => x=8 in
And therefore, y=16-8 = 8 in
3 feet per second is equivalent to 2.04545 miles per hour
Brian will get 40,000 then Chris will get 70,000
Answer:
the answer is B because it has only one unknown and also it is a linear equation so it will have only one answer which is (2 )
