Answer:
1/5 x (2275x^2-85x+3)
0
5
3
becos i know UwU
3^2*3^2 (2x+3)=3^2+4x+6=3^4x+8
3^3*3^x-2=3^x+1
4x+8=x+1
3x=-7
x=-7/3
new depth =
4.2/100 X 89 = 3.738 feet