Answer:
Meters:4.8x10 to the 6th power
Millimeters:4.8x 9th power.
Be doin Pearson MathXL
I did 1 today.
Area=length*width
let the sides perpendicular to the river be x
then the side parallel to the river is 4,700-2x
A(x)=x(4700-2x)
A(x)=4700x-2x^2
This a quadratic function with a=-2 and b=4700
thus
Maximum area occurs where x=-b/2a=-4700(-2*2)=1,175 ft
length=4700-2(1175)=2,350 ft
Your car will take you 23 miles on the first gallon, 23 miles on the second gallon, 23 miles on the third gallon, and 23 miles on the fourth gallon. The total distance is 92 miles, and if you have not added more gas by that time, it will all stop right there.