Math CentralQuandaries & Queries


Question from Emily, a student:

If a tree is 10 ft tall after 2 years and 25 ft tall after 5 yrs , find the rate of change of growth
Of the tree if y is the height in ft and x is the number of years.

Hi Emily,

In 3 years the tree grew 15 feet. How much did it grow every year?


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