Determine the missing amounts in each of these four separate situations a through d. a d 1,915 8,260 Supplies available-prior year-end Supplies purchased during current year Total supplies available Supplies available-current year-end Supplies expense for current year 425 $ 2,975 3,400 (875) 2,525 2,253 $ 7,660 9,913 (7,960) 1,953 ces (2,395) 14,452 (800) 8,835