Answer:
constant
Step-by-step explanation:
1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 8 + 8 + 9 + 9 + 10 + 10 - 90 = 20
103 1/2 + 12 = 115 1/2
1/2 + 115 1/2 = 116.