From 1987 to 2009, the number BB of federally insured banks could be approximated by B(t)=−327.4t+13715B(t)=-327.4t+13715 where t is the year and t=0 corresponds to 1987. How many federally insured banks were there in 1992?    Find the slope of the graph of B. Find the y-intercept of the graph of B. The y-intercept is

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