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correct me if im wrong bb
The reservoir dropped 6 feet during a long dry spell and then rose 4, feet following
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You can start by rewriting the equation so that the right side equals zero. Add 
and 
to both sides.
You can now use the quadratic equation (below), where
and 
, to find solutions. Plug in these values for 
and 
into the equation and simplify.
The final answer is the combination of both solutions.
Or approximately...
You can now use the quadratic equation (below), where
The final answer is the combination of both solutions.
Or approximately...