Answer:
[tex]y-(0.05xp+7)[/tex]
Step-by-step explanation:-
As per the statement:
Quinton bought x number of shares for p dollars and paid a 0.5% commission
⇒[tex]0.05xp[/tex]
It is also given that: He sold the stock for y dollars and paid a flat fee of $7.
⇒[tex]y-7[/tex]
then;
Net proceeds is given as:
[tex]y-7-0.05xp = y-(0.05xp+7)[/tex]
Therefore, Quinton's net proceeds algebraically is [tex]y-(0.05xp+7)[/tex]