Answer:

Step-by-step explanation:-
As per the statement:
Quinton bought x number of shares for p dollars and paid a 0.5% commission
⇒
It is also given that: He sold the stock for y dollars and paid a flat fee of $7.
⇒
then;
Net proceeds is given as:

Therefore, Quinton's net proceeds algebraically is 
Answer:
40
Step-by-step explanation:
The given geometric series is:
.
When n=1,
, 
When n=2,
, 
When n=3,
, 
When n=4,
, 
The sum of the given series is:
-2+6-18+54=40
The answer is B.27. Hope this helps!