The Better Baby Buggy Co $q = - 4 x + 220$

Multiple Choice

The Better Baby Buggy Co. has just come out with a new model, the Turbo. The market research department predicts that the demand equation for Turbos is given by
$q = - 4 x + 220$
where q is the number of buggies it can sell in one month if the price is $x per buggy. At what price should it sell the buggies to get the largest revenue Round the result to the nearest dollar.

A) $14
B) $110
C) $28
D) $128
E) $3,025