At what price should it sell the buggies to get the largest revenue?

Question

The market research department of the Better Baby Buggy Co. predicts that the demand equation for its buggies is given by
q = −1.5p + 450
where q is the number of buggies it can sell in a month if the price is $p per buggy. At what price should it sell the buggies to get the largest revenue?

Answer 1

For q to be maximum, -1.5p must be minimum (so it subtracts the least from 450)

If p represents dollars, then the minimum is p = 0.01

Selling a Buggy for 1 cent does not make sense.

Check the accuracy of the equation.