Solution: P(X)=(20-X)*(30+3x)
Analysis: We know X= dollar decreases. And we have the statements:
We have an initial profit of $ 20. For each X dollar we decrease in profit, the amount of bouquets per week increase three.
So we have part of the equation:
P(X)=Profit* Amount of bouquets.
Profit =(20-x)
Amount of bouquets (30+3x)