From 1984 to 2008, the number BB of federally insured banks could be approximated by B(t)=−327.2t+13723B(t)=-327.2t+13723 where t is the year and t=0 corresponds to 1984. How many federally insured banks were there in 1989?    Find the slope of the graph of B.  Interpret this slope as a rate of change. Choose the correct answer below. The number of banks increased by 13723 banks per year The number of banks decreased by 327.2 banks per year The number of banks decreased by 12087 banks per year The number of banks decreased by 13723 banks per year The number of banks increased by 327.2 banks per year The number of banks increased by 12087 banks per year Find the y-intercept of the graph of B. The y-intercept is  Interpret the y-intercept. Choose the correct answer below. The y-intercept is the minimum number of banks allowed in the country The y-intercept is the number of banks in 1989 The y-intercept is the number of banks in 1984 The y-intercept is the maximum number of banks allowed in the country The y-intercept is the number of banks in 2008

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.