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table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell E equals 18 comma 000 minus 2 comma 000 t end cell row cell V equals 18 comma 000 left parenthesis 0.85 right parenthesis to the power of t end cell end table
The given equations are two different models that can be used to find the value, in dollars, of a particular car t years after it was purchased. Which of the following statements correctly compares the values of E and V for  0 < t < 9 ?

  1. E is always less than V.
  2. E is always greater than V.
  3. E is initially greater than V but eventually becomes less than V.
  4. E is initially less than V but eventually becomes greater than V.

The correct answer is: E is initially greater than V but eventually becomes less than V.


    HINT: Draw graph for better understanding
    Explanation:
    The decrement rate of E is constant but the rate of decrement decreases for the V.
    After some limit the decrement in E would be greater than V

    Graphs x axis shows the 1000 dollars cost and y axis shows the time in years
    Green graph represents y = 18(0.85)x and line AC shows y = 18-2x

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