Label each remaining tick mark with its value.
a
Adults: 0, 2, 6, 4, 8. Children: 0, 24, 76, 48, 96.
b
Adults: 0, 2, 3, 4, 8. Children: 0, 24, 48, 72, 96.
c
Adults: 0, 2, 4, 6, 8. Children: 0, 24, 48, 72, 96.
d
Adults: 0, 2, 4, 6, 8. Children: 0, 24, 12, 6, 96.

