Answer :
The broker charges $6.50 per ticket, therefore, the total amount will be directly related to the total number of tickets sold.
The two quantities that are changing in the situation are:
[tex]Total\text{ amount, number of tickets.}[/tex]Now, the total amount depends on the number of tickets sold, therefore, if we define
[tex]\begin{gathered} Total\text{ amount=T,} \\ number\text{ of tickets=n,} \end{gathered}[/tex]we can set the following equation:
[tex]T=6.50n.[/tex]Answer:
Part a) Total amount, and the number of tickets.
Part b)
[tex]\begin{gathered} Total\text{ amount =T,} \\ number\text{ of tickets=n.} \end{gathered}[/tex]T is the dependant variable, and n is the independent variable.
Part c)
[tex]T=6.50n.[/tex]