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2 October, 14:09

Suppose that it costs $11 to place a classified advertisement in the newspaper, plus $3 for each line. then the cost to place an ad x lines long is given by y dollars, where y=3x+11.

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  1. 2 October, 14:30
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    Write down 11 dollars for one advertisement so your x value is unknown so you plug in your y value
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