SOLUTION: The number of weekly domestic violence arrest in an Urban area St. Louis increased from 102 in 2006 to 123 in 2009. Predict the number of weekly domestic violent in 2013.

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Question 464216: The number of weekly domestic violence arrest in an Urban area St. Louis increased from 102 in 2006 to 123 in 2009. Predict the number of weekly domestic violent in 2013.
Answer by richard1234(7193)   (Show Source): You can put this solution on YOUR website!
If the number of domestic violence arrests increased linearly, then the number of increases per year would be (123 - 106)/(2009 - 2006) = 7 cases/year. Hence, in 2013, there would be about 123 + 4(7) = 151 cases.

However, assuming a linear function is not very realistic, since many factors can change it. Oftentimes when you see some data and a future "projection" there will be a wide range of values, instead of one estimate (151 in this case).

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