SOLUTION: My son and i have been working on a quadratic formula questions for a few hours now, literally, and we cannot figure it out. The problem reads: The length of a rectangular yard s

Question 444689: My son and i have been working on a quadratic formula questions for a few hours now, literally, and we cannot figure it out. The problem reads:
The length of a rectangular yard shown in the figure is 50 less than 4 times the width. One side of the yard is bordered by the Potomac River. If the area of the yard is 16100 square feet, how many feet of the yard is alongside the river?
Potomac River
_________________________
| |
| |
| |x ft
|________________________|
4x-50
We think the quadratic equation would be 4x^2-50x-16100=0
Are we thinking about this wrong because it is driving us crazy...
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
your setup is correct
now use the quadratic equation to solve
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