Homework Help: Rate of change problem

Posted by kathy m. on Sunday, December 30, 2012 at 11:31pm.

In 1993, 90 houses were built. in 1997, 102 more houses were built. find the average rate of change in the number of new homes built. express the result in terms of new houses built per year.
a. 1/3
b. 102/90
c. 3/1
d. 5/2

could you explain it too? i dont really get how to set it up.

Rate of change problem - Reiny, Sunday, December 30, 2012 at 11:34pm
change in number of houses built / change in time
= 12/4 = 3 houses per year

I suppose 3/1 would match that.
Rate of change problem - kathy m., Sunday, December 30, 2012 at 11:44pm
oh, i got it now thanks

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