A department store is having as special sale. On monday, the regular price of a dress is marked down by 25%. On Tuesday, the dre
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ANSWER
$3
Or
$4
EXPLANATION
The revenue function is
The cost function is,
C=600-50t
In order to break even, revenue must be equal to cost.
Group every term on the LHS.
Divide through by 50.
Factor to obtain,