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Linear Equations in One Variable

SAT Math· difficulty 4/5

From the previous setup, what is the xx-intercept (when value reaches \0$) and what does it represent?

  • A

    x=16x = 16, year value depreciates to 0

  • B

    x=8x = 8, end of useful life

  • C

    x=24x = 24, total years

  • D

    x=12x = 12, the year value reaches $0

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Explanation

V(t)=24000−2000t=0V(t) = 24000 - 2000t = 0 → t=12t = 12 years.

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