The figure below shows how the price of Amazon's Kindle 2 e-book reader has decreased over time. The data for 2011 are projected.) For example, the price was $349 when the Kindle was launched in February 2009
The price had dropped to $299 by July 2009. The graph is a straight line, and we will assume that the relationship is linear
$400
350
300
250
200
150
100
1.60
150
8
/monthRound to
a) By using the information for February and July of 2009, the decrease in price over each month is s
the nearest dollar)
b) Select the formula for the price, in dollars, as a linear function of the time in months since February 2009. The answer is letter
a. Price = $578 - $10(t)
b. Price = $350 - $8(t).
c. Price = $349 - $10(1)
c) Find a formula for the price in dollars, as a linear function of the time in months since February 2009. Using this formula, the price in January 2012 which is
35 months after the Kindle was launched will be s
(Round to the nearest dollar)
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