The Demand Equation for the Sicard Wristwatch Is Given by

Multiple Choice

The demand equation for the Sicard wristwatch is given by , where x (measured in units of a thousand) is the quantity demanded each week and p is the unit price in dollars. Find the rate of change of the quantity demanded of the wristwatches with respect to the unit price when the unit price is $60. Round your answer to the nearest whole number.

A) - 634 wristwatches/(dollar price increase)
B) - 1,358 wristwatches/(dollar price increase)
C) - 917 wristwatches/(dollar price increase)
D) - 417 wristwatches/(dollar price increase)