Calculate the number of filing units.

Case 2 ari as low es esqrs still not beboon asbing sill lor 12-shelf unit. 150 inches/shelf. 21,000 inches of current records. 6,000 projected inches needed for future. lolb-Ismmisterdi ablery of been mating ordd as low as beest Case 3 d absons Of to shirt bushrale and bas ,abrose7 000 es. 20-shelf unit. 125 inches/shelf. 145,000 inches of Out ers star current records. 20,000 projected inches needed a vismig re for future. bazarbig