A physical therapy clinic faces a demand equation of Q = 200 – 1.5 × P,
where Q is sessions per month and P is the price per session.
a. The clinic currently charges $80. What is its sales volume and revenue at this price?
b. If the clinic raised its price to $90, what would happen to volume and revenue?
c. If the clinic lowered its price to $70, what would happen to volume and revenue?