Let x represent side opposite to highway and y represent other two opposite sides as shown in the diagram.
The perimeter of the parking lot will be sum of 3 sides that is
.
We have been given that the plan is to use 440 feet of fencing to fence off the other three sides. This means that perimeter of 3 sides is 440.


We know that area of rectangle is length times width, so area of parking lot will be 
Upon substituting value of x, we will get:


Now we will find the derivative of area function as:


Let us find critical point by equating derivative to 0.




Now we will substitute this value is equation
to solve for x as:


Therefore, the dimensions of 220 feet by 110 feet will enclose the maximum area.
Answer:
A: 8+4t. B:12+2t
Step-by-step explanation:
It would take 2 hours for them to equal each other
Answer:
2.499
Step-by-step explanation:
The easiest way is to plug x=-4, y=-1 in the equation to see which one works.
8(-4)-9(-1)=-23
B is correct.
Answer:
-1/2
Because, for every one square, the line goes <em>down </em>by 1/2.