Answer:

with 
Step-by-step explanation:
We can study what happens day by day starting with day one (1) to understand how the recursive relation can be constructed:
Day # Number of stamps What is added relative to previous day
1 d1 = 80 + 1 = 81
2 d2 = 81 + 2 = 83 d2 = d1 + 2
3 d3 = 83 + 4 = 87 d3 = d2 + 
4 d4 = 87 + 8 = 95 d4 = d3 + 
5 d5 = 95 + 16 = 111 d5 = d4 + 
6 d6 = 111 + 32 = 143 d6 = d5 + 
(n+1) d(n+1) = dn + 
Answer:
H and J
Step-by-step explanation:
Mean = 4.4
Mode = 2
Range = 13
Explanations:
Mean = (1 + 2 + 2 + 2 + 3 + 4 + 5 + 5 + 6 + 14)/10 = 44/10 = 4.4
Mode = 2 (Happens most frequently)
Range = 14 - 1 = 13