3. A farmer with 3500 yards of fencing wants to enclose a rectangular plot that borders on a river.
The farmer will not fence the side along the river. Let x = the length of fence perpendicular to the
river (see picture) Find area of the plot as a function of x. What is the maximum area that can be
enclosed, and what are its dimensions?
De
3500 - 2x

Don’t know sorry about that

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.