SOLUTION: Assume that the sales of a certain automobile parts company are approximated by a linear function. Supppose the sales were $200,000 in 1994 and $1,000,000 in 2001. A. Find an equa

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Assume that the sales of a certain automobile parts company are approximated by a linear function. Supppose the sales were $200,000 in 1994 and $1,000,000 in 2001. A. Find an equa      Log On


   



Question 162628: Assume that the sales of a certain automobile parts company are approximated by a linear function. Supppose the sales were $200,000 in 1994 and $1,000,000 in 2001.
A. Find an equation giving the companys yearly sales
B. Find the sales in 1996
C. Estimate the sales in 2007

Answer by stanbon(75887) About Me  (Show Source):
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Assume that the sales of a certain automobile parts company are approximated by a linear function. Supppose the sales were $200,000 in 1994 and $1,000,000 in 2001.
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You have two points:
(0,200,000) and (7,1000000)
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slope = [1000000-200000]/[7-0] = 800,000/7 = 114285.71
intercept: 200,000
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EQUATION:
Sales(x) = 114,285.71x + 200,000 where x is the number of years after 1994
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A. Find an equation giving the companys yearly sales
B. Find the sales in 1996
S(2) = 114,285.71*2 + 200,000 = 428571.42
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C. Estimate the sales in 2007
S(13) = 114285.71*13 + 200,000 = $1,685,714.23
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Cheers,
Stan H.