Please help with the following? I can't determine the answer.

Firm A has $7,600 in sales. The profit margin is 3 percent. There are 5,100 shares of stock outstanding, with a price of $1.30 per share. If you invest in the firm, What is your return on each dollar invested?

A$0.068

B$0.034

C$0.043

D$0.081

E$0.015

To purchase a car, you are willing to pay a cash down payment of $2,500, together with taking a loan of $200 a month for four years. The interest rate (APR) is 4.9 percent, compounded monthly. The loan payments start right away. What price car can you afford to purchase? Hint: Price is the sum of down payment and the PV of the loan.

A $9,149.36

B $7,686.42

C $10,581.93

D $11,237.23

E $8,139.03