Math Problem Statement

A car was bought in
February 1, 2015 for
$ 25 , 000 , and its value depreciates by
1.5 % every single month. The value of the car
m months since
February 1, 2015 is given by the formula
V ( m )

25 , 000 ( d ) m , where
d is the decay factor. Find the value of the car on
June 1, 2017 . Round your answer to the nearest cent.

Solution

To find the value of the car on June 1, 2017, we'll break down the problem into steps:

  1. Find the number of months between February 1, 2015, and June 1, 2017:

    • From February 1, 2015, to February 1, 2017, there are exactly 24 months.
    • From February 1, 2017, to June 1, 2017, there are 4 more months.

    Therefore, the total number of months, mm, is: m=24+4=28 monthsm = 24 + 4 = 28 \text{ months}

  2. Determine the decay factor dd: The car depreciates by 1.5% every month, which means it retains 98.5% of its value each month. So the decay factor dd is: d=10.015=0.985d = 1 - 0.015 = 0.985

  3. Use the given formula to find the car's value after m=28m = 28 months:

    The formula for the value of the car after mm months is: V(m)=25,000×(d)mV(m) = 25,000 \times (d)^m Substituting the values for dd and mm: V(28)=25,000×(0.985)28V(28) = 25,000 \times (0.985)^{28}

Now, let's calculate the value.

The value of the car on June 1, 2017, after 28 months of depreciation, is approximately $16,373.99, rounded to the nearest cent.

Would you like further details or explanations? Here are some related questions for deeper understanding:

  1. What would be the car's value after 3 years of depreciation?
  2. How does the car's value change if the depreciation rate is increased to 2% per month?
  3. How many months would it take for the car's value to drop below $10,000?
  4. How can we model depreciation with more complex factors, such as varying monthly rates?
  5. What is the difference between exponential and linear depreciation?

Tip: In problems with percentage decay or growth, using the decay or growth factor simplifies calculations significantly.

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Math Problem Analysis

Mathematical Concepts

Exponential Decay
Percentage Depreciation
Algebra

Formulas

Exponential Decay Formula: V(m) = P(d)^m
Decay Factor Formula: d = 1 - (depreciation rate)

Theorems

Exponential Growth and Decay Theorem

Suitable Grade Level

Grades 9-12