Problema Solution
A manufacturer of graphing calculators has determined that 12,500 calculators per week will be sold at a price of $98. At a price of $95, it is estimated that 13,640 calculators would be sold.
(a) Determine a linear function that will predict the number of calculators y that would be sold at a given price x.
(b) Use this model to predict the number of calculators that would be sold each week at a price of $71.
How many calculators sold at $71?
Answer provided by our tutors
supposed the equation is y=mx+b,so 10,000 = 99m+b-------(1) 11,600 = 95m+b-------(2) let (1)-(2)we got:-1,600=4m then m=-400;10,000=-400*99+b then b=49600;so the equation is y=-400x+49600