Solve the Problem $\$ 720$ Plus Commission Of $16 \%$ Of Sales Company B Offers a Weekly Salary Of Offers

Multiple Choice

Solve the problem.
-A salesperson has two job offers. Company A offers a weekly salary of $\$ 720$ plus commission of $16 \%$ of sales. Company B offers a weekly salary of $\$ 1440$ plus commission of $8 \%$ of sales. What is the amount of sales above which Company A's offer is the better of the two?

A) $\$ 9100$
B) $\$ 4500$
C) $\$ 18,000$
D) $\$ 9000$