SOLUTION: A Norfolk pine is 3feet tall and grows at a rate of 1.5 feet per year. How old is the tree when it reaches 60 feet tall?

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Question 1168380: A Norfolk pine is 3feet tall and grows at a rate of 1.5 feet per year. How old is the tree when it reaches 60 feet tall?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
3+1.5x=60, linear equation
1.5 x=57
x=38 years

Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.

    3 + 1.5*t = 60  feet.


Solve for t, where t is the time in years under the problem's question.