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The graph represents the value y of a boat after x years. Find the value of the boat after 2 years and

after 8 years.


Value of a Boat
y
(0, 30)
(1,24)
(3, 15.36)
(1, 24)
(3, 15.36)

After 2 years:

After 8 years:

1 Answer

2 votes

Answer:

  • after 2 years: $19,200
  • after 8 years: $5,030

Explanation:

You want the value of a boat after 2 years and after 8 years if its value declines as shown the graph.

Graph

The value is shown as having an exponential decay. The decay rate appears to be 24/30 = 0.8 per year.

Value

The value after 2 years will be ...

30(0.8²) = 19.2 . . . . thousands

The value after 2 years is $19,200.

The value after 8 years will be ...

30(0.8⁸) ≈ 5.033 . . . . thousands

The value after 8 years is about $5,030.

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Additional comment

The graph value 15.36 is rounded to the nearest $10. We have used the same rounding above. The calculated 8-year value to the nearest penny is $5033.16. You can round this number to the precision that your grader may require. (It is quite reasonable to report the value as $5,000, as it is difficult to read more than 2 significant figures from the graph.)

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The graph represents the value y of a boat after x years. Find the value of the boat-example-1
User Kul Bhushan Prasad
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