From 1983 to 2009, the number B of federally insured banks could be approximated by B(t) = - 324.2t + 13702 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 decreased by 12081 banks per year O The number of banks decreased by 13702 banks per year The number of banks increased by 324.2 banks per year O The number of banks increased by 12081 banks per year The number of banks decreased by 324.2 banks per year The number of banks increased by 13702 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 1983 The y-intercept is the maximum number of banks allowed in the country O The y-intercept is the number of banks in 1988 The y-intercept is the number of banks in 2009