Question 178076: A consumer electronics company sells 6.7 million MP3 players per month at a price of $100 apiece; when the price is lowered to $80, the company sells 10.2 million players per month. How many MP3 players can the company expect to sell per month at a price of $75?
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! This is a linear relation, and you're given 2 points.
With 2 points you can plot the entire line. The points are:
(6.7,100) and
(10.2,80) where each unit on the x-axis is times 1 million
and the y-axis is dollars
The formula is:
I'll say that
( , ) = (6.7,100)
( , ) = (10.2,80)
Multiply both sides by 
If  or,the price is $75
They can expect to sell 11,075,000 MP3 players
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