What Is the Annual Rate of Increase for the Price of Milk?

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The price of a gallon of milk increased from $1.79 to $2.15 over two years. To calculate the annual rate of increase, the formula r = ΔP/Δt is used, where ΔP is the change in price and Δt is the time period. The discussion raises the question of whether this rate of increase is constant. Participants are encouraged to avoid double posting to maintain clarity in the conversation. Understanding the annual rate of increase in milk prices is essential for tracking inflation and consumer costs.
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A gallon of milk was $1.79 two years ago. Today, it's $2.15. Find the rate it increased each year.
 
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Is the rate of increase constant?

cookiemonster
 
As for any rate of change problem

r = \frac {\Delta P} {\Delta t}

r is the rate of change, P is price, t is time.
 
I've posted my answer https://www.physicsforums.com/showthread.php?goto=newpost&t=23872

Can you stop double posting. Come on, you know better.
 

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