From 1983 to 2003, the number B of federally insured banks could be approximated by B(t) = 322.6t + 13787 where t is the year and t=0 corresponds to 1983. How many federally insured banks were there in 1988? Find the slope of the graph of B. Interpret this slope as a rate of change. Choose the correct answer below. O The number of banks increased by 12174 banks per year O The number of banks decreased by 322.6 banks per year O The number of banks increased by 322.6 banks per year O The number of banks decreased by 13787 banks per year O The number of banks decreased by 12174 banks per year O The number of banks increased by 13787 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. O The y-intercept is the maximum number of banks allowed in the country O The y-intercept is the number of banks in 1983 The y-intercept is the minimum number of banks allowed in the country O The y-intercept is the number of banks in 1988 O The y-intercept is the number of banks in 2003