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10. [-/3 points) DETAILS 0/30 Submissions Used MY NOTES The following table shows worldwide sales of cell phones by a certain company and their average wholesale prices in the first quarters of 2009 and 2010. Quarter Q1 2009 Q1 2010 Wholesale Price ($) 94 90 Sales (millions) (a) Use the data to obtain a linear demand function for the company's cell phones. (Let o be the price, and let a be the demand), 112 120 96) - 3.9x Use your demand equation to predict sales if the company lowered the price further to $80 million phones (b) Fill in the blank. For every $1 increase in price, sales of cell phones decrease by million units. Need Help? Practice it 10. [-/3 points) DETAILS 0/30 Submissions Used MY NOTES The following table shows worldwide sales of cell phones by a certain company and their average wholesale prices in the first quarters of 2009 and 2010. Quarter Q1 2009 Q1 2010 Wholesale Price ($) 94 90 Sales (millions) (a) Use the data to obtain a linear demand function for the company's cell phones. (Let o be the price, and let a be the demand), 112 120 96) - 3.9x Use your demand equation to predict sales if the company lowered the price further to $80 million phones (b) Fill in the blank. For every $1 increase in price, sales of cell phones decrease by million units. Need Help? Practice it

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