Question

Dvd players sell for $150 each at a rate of 800 per week. When the price is reduced by $5 per unit they sell 40 extra units per week
What is the price function?

Answer 1

Reducing the price by $5 increases the sales by 40 units, so the revenue funtion is given by :

\[r(x)=(150-5x)(800+40x)\]

Answer 2

Thanks ganeshie