Answer
$ŷ =2.100x-347$
Work Step by Step
In MINITAB, enter the square footage values for Nassau County in C1 and in C2 enter the rent per month values for Nassau County.
Select Stats -> Regression -> Regression -> Fit Regression Model
Enter C2 in "Responses" and C1 in "Continuous Predictors"
The least-squares regression line ($ŷ =b_1x+b_0$) will be shown in "Regression Equation", where C2 is $ŷ $ (rent per month) and C1 is $x$ (square footage)