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college math word problem

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A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

  • college math word problem - ,

    y = 45 - 5x

    Insert the value for y and calculate.

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