2) Eric is a member of the medical support team at a hospital. He unpacked boxes that each contained 5 surgical gowns. He already had an inventory of 87 surgical gowns when he began this task. He now has an inventory of 217 surgical gowns. Write an equation that can be used to find how many boxes Eric unpacked? Use b to represent the number of boxes that Eric unpacked.
3) How many boxes did Eric unpack?