Answer:
Let width be x ft
Length=2x-70 ft
Perimeter=760ft
Perimeter=2(x+2x-70)
760 ft=2(3x-70)
380ft=3x-70 ft
450ft=3x
x=450/3
x=150ft.
for this we need 90 percent 5410
so we multiply 5410*0.9=4869
Hope This Helps!!!
5x(5x+1)^2
= 5x(25x^2+10x+1)
= 125x^3+50x^2+5x
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