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The sale of sweaters in a town changes with the temperature. If a statistical model predicts that daily sales (in dollars) are determined by the function s = 900 − 100t, where t is the temperature (in degrees Celsius), what is the temperature if sweater sales are at $1,200?

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Cakecrafter923
21 Celsius.

You add 900 to 1,200 to get 2,100. Then you divide that by 100 to get 21. Hope this helps!

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