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15 September, 09:10

Sales at a certain department store follow the model y=85-13.254x where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below $50,000?

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  1. 15 September, 10:22
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    50 = 85 - 13.254x ... solve for x

    x = 2.64071 round up to 3

    hence 2001 + 3 = 2004
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