Hi there
1) 3.5
2) 6
3) 0.0015
4) 0.0055
5) 250%
6) 975%
7) 420%
8) 730%
9) 850%
10) 264%
11) 0.9%
12) 0.34%
13) 140%
14) 0.1%
15) 0.003 (decimal) and 3/1000 (fraction)
X=2 so 2+4=6 so y=6. I just gone ovee this unit aswell.
Sorry this came pretty late but I just answered the question and thought it might help someone else later
Answer:
Amount of increase = 100 users
100/400 = 0.25 = 25%