<span>Linear regression is a method of finding the linear equation that comes closest to fitting a collection of data points.
</span>The better the choice of line, the closer the predicted values will be to the observed values.
The differences between the data pints (observed values) and the estimated (pedicted) regression line is called the <span>residue.
</span>Residue = Observed Value -<span> Predicted Value</span>
To find the annual rate of chnge, we have to use the following formula

P(2010) represents the population in the year 2010 and P(2000) represents the population in the year 2000 .
Substituting the values, we will get

You would do 157.5/35 to find how much gas she needs
157/35=4.5
She'll need 4.5gallons of gas