Answer: 
Step-by-step explanation:
The nth term for a geometric sequence is given by :-
(1)
We are given that The first term in a geometric sequence is 54. i.e. a=54
5th term=
(2)
Put n=5 and a= 54 in (1), we get
(3)
From (2) and (3), we have

Explicit form for the geometric sequence: 
Answer:
25% bc if you split 100 into 4 pieces you get 25
Now if the lemonade is 1.50 he can only buy two because the total amount is 8.30 so it will be 3.00 and the amount left will be 5.00 and you can only buy one cupcake so you will buy two lemonades one cupcake
She actually has 8.36, so I think it's not reasonable to say 8.50, much closer to 8....my opinion