Answer:
B) Fifth Grade Boys
Step-by-step explanation:
The far right green line represents the fifth grade boys, and you can see that this lines up right in the middle of 50 and 60.
AD = 1 3/4y + 5/8x - 3
AD = 1/4x + 2y + 3 - 1/4y + 3/8x - 6
combine like terms:
10, 11, 12, 13, 14, 15, 16
The natural numbers are 1, 2, 3, 4, ...
The natural numbers between 9 and 17 are 10, 11, 12, 13, 14, 15, 16.
Answer: 10, 11, 12, 13, 14, 15, 16