Math Problem Statement

The table below shows the ages of some trees and their corresponding heights. Find an exponential model for tree height as a function of age. What height does your model predict for a 34-year-old tree? Age (years): 6, 12, 18. Length (feet): 2.2, 5.3, 26.4.

Solution

To solve this problem, we need to develop an exponential model for tree height as a function of tree age. The general form of an exponential model is:

y=abxy = ab^x Where:

  • yy is the height (in feet),
  • xx is the age (in years),
  • aa is the initial height when x=0x = 0,
  • bb is the growth factor.

We are given the following data points:

  • (6,2.2)(6, 2.2)
  • (12,5.3)(12, 5.3)
  • (18,26.4)(18, 26.4)

We will use these points to determine the values of aa and bb, then use the model to predict the height of a 34-year-old tree.

I'll now calculate the parameters aa and bb.The exponential model for tree height based on the given data is:

y=0.269(1.290)xy = 0.269 \cdot (1.290)^x

Where yy is the height in feet and xx is the age in years.

For a 34-year-old tree, the predicted height is approximately:

1551.70 feet1551.70 \text{ feet}

Let me know if you would like more details or have any questions.

Here are 5 related questions for deeper understanding:

  1. How does the exponential growth model differ from a linear growth model?
  2. How can we verify if an exponential model is the best fit for this data?
  3. What would be the height of a 20-year-old tree using this model?
  4. How can we adjust the model to include environmental factors affecting growth?
  5. What does the parameter bb signify in this context?

Tip: When interpreting exponential models, the base bb indicates the rate of growth, while the initial height aa helps define the starting point.

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Math Problem Analysis

Mathematical Concepts

Exponential Growth
Algebra
Mathematical Modeling

Formulas

y = ab^x (Exponential Model)

Theorems

Exponential Growth Theorem

Suitable Grade Level

Grades 9-12