Examine the rise of the price of milk from 1997 to 2008. The average price of a gallon of whole milk in January 1997 was $2.67, and in January 2008, the average price of a gallon of whole milk was $3.87 according to Consumer Price Index. Use the coordinates (1997, 2.67) and (2008, 3.87) to find the slope, or rate of change, between the two points. Describe and show how you arrived at your answer. Express your answer as a decimal rounded to the nearest hundredth.

Question

anonymous · Answer

hey, nwolf, I solved it for you in the previous post already!

nwolf · Answer

It did not show up

anonymous · Answer

(1997, 2.67), (2008, 3.87) 
Slope, rate of change: 
= (3.87 - 2.67)/(2008 - 1997) = $.109/ year

The cost of 1 gallon milk keep increasing averagely $.11 each year from 1997 to 2008. Typically, the cost of living raising up yearly!

nwolf · Answer

You are amazing I spent all day trying to figure this out I was doing it backwords!!

anonymous · Answer

I'm just more familiar with it, that's it :)

anonymous · Answer

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