The population of wolves in a sanctuary has been growing by about 20 wolves a year.  In 2012, there were 415 wolves in the sanctuary.  

  1. Create a linear equation for the number of wolves, P, using the input variable n = number of years since 2012.
     

  2. Create a linear equation for the number of wolves, P, using the input variable t = number of years since 2010.
     

  3. Predict the number of wolves in the sanctuary in 2018.  Try using both equations to ensure they agree.
    wolves

  4. What are the advantages to each way of defining the input variable?

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