Grami Grami 22-06-2018 Mathematics contestada The local park has 4 bike racks. Each rack can hold 15 bikes. There are 16 bikes in the bike racks. Which expression shows the total number of empty spaces in the bike racks? (15x16) + 4 (15x16) - 4 (4x15) + 16 (15x4) - 16