A store manager wants to know the demand y for an energy bar as a function of price x. The daily sales for three different prices of the energy bar are shown in the table.
Price, x
$0.94
$1.21
$1.55
Demand, y
490305340?
?
(i) Use the regression capabilities of a graphing utility to find the least squares regression line for the data.(ii) Use the model to estimate the demand when the price is $1.38.
Round your answer to the six decimal places.
?

A. (i) ; (ii) 374.134036
B. (i) ; (ii) -453.157181
C. (i) ; (ii) 542.199365
D. (i) ; (ii) -453.157181
E. none of the above


Answer: E

Mathematics

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