Answer:
1.79% chance or 
Step-by-step explanation:
7+3+4=14
chance of yellow 
chance of orange 

No because its explain how much cumulative tip total on day 5 so the answer is D.400
8 increased by 20% is 9.6 i hope this helps :)
4n - (7-6n)
4n -7 +6n (multiply minus to 7-6n)
10n -7 is the answer