From 1981 to 2003, the number B of federally insured banks could be approximated by B ( t ) = − 329 t + 13784 where t is the year and t=0 corresponds to 1981. How many federally insured banks were there in 1986?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?