QuestionGiven cell phone sales and prices for Q1 2009 and 2010, find the demand function $q(p)$. Predict sales at \$156. Also, determine the sales decrease per \$1 price increase.

Studdy Solution
For every $ increase in price, sales of cell phones decrease by the absolute value of the slope of the demand function, which is39 million units.
So, for every $ increase in price, sales of cell phones decrease by39 million units.