Algebra Word Problem

Algebra
Tutor: None Selected Time limit: 1 Day

The height h in feet of water in a cylindrical storage container which has sprung a small leak is modeled by the formula h=0.0005t^2-0.14t+8 where t is the elapsed time in seconds. Estimate to the nearest second the time it takes for the water level to drop down to a height of 5 feet. 

May 14th, 2015

0.0005t^2 - 0.14t + 8 = 5

0.0005t^2 - 0.14t + 3 = 0

Use quadratic formula to solve:

t = 23 seconds

May 14th, 2015

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