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Find the average rate of change of  r(n) over the interval 

It looks like you're working on a price-demand and revenue function problem. The average rate of change you're asking about for \( r(n) \) (presumably the revenue function) over an interval can be calculated by the following formula:

\[
\text{Average rate of change} = \frac{r(b) - r(a)}{b - a}
\]

Where \( a \) and \( b \) are the bounds of the interval over which you want to find the rate of change, and \( r(n) \) is the revenue function. The revenue function is usually given as:

\[
r(n) = n \cdot p(n)
\]

where \( n \) is the number of units sold and \( p(n) \) is the price-demand function.

To help you further, I would need either the specific interval or additional details from your problem. Would you like me to help solve this step by step, or do you have more details to provide?

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Here are some follow-up questions you might be interested in:

1. What is the full expression for the revenue function \( r(n) \)?
2. What interval should I use to calculate the average rate of change?
3. How do changes in \( n \) affect both the price \( p(n) \) and revenue \( r(n) \)?
4. Would you like help calculating the slope of the price-demand function?
5. How does the price-point change for different units sold?

Tip: To calculate revenue, always multiply the number of units sold by the price per unit at that quantity!

Find the price-demand function, its slope, and other related quantities for Total Life Trackers, including domain, price at specific quantities, and total revenue.

Explore the price-demand function for Total Life Trackers with a detailed breakdown of the slope, domain, and revenue calculations. Learn how to find the price for specific quantities and how the price decreases as units sold increase. This content is suitable for high school students in Grades 10-12.

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