Volume of a Trough is given by V= 32d2 + 32d, where d is the depth, in feet

AM123

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need help trying to solve this problem. Dont know where to begin.

Volume of a Trough Water is running into a trapezoidal trough. The volume V, in cubic feet, of water in the trough is given by V= 32d2 + 32d, where d is the depth, in feet , of the water in the trough. Find the depth of the water when the volume is 850 cubic feet. Round to the nearest tenth of a foot.
 
need help trying to solve this problem. Dont know where to begin.

Volume of a Trough Water is running into a trapezoidal trough. The volume V, in cubic feet, of water in the trough is given by V= 32d2 + 32d, where d is the depth, in feet , of the water in the trough. Find the depth of the water when the volume is 850 cubic feet. Round to the nearest tenth of a foot.

Solve for 'd':

850 = 32 * d2 + 32 * d

This is a quadratic equation - where are you stuck?
 
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