i really need help because I have a test tomorrow and i so confuse with this question. please help me!!

Question

during the winter, you earn $10 per driveway for shoveling snow. Which expression represents the amount of money you will earn after d number of driveways?

       a. d/10

       b. 10+d

       c. 10d

       d. 10-d

Answer 1

10d. Say you shovel 5 driveways. d = 5. Earning $10 each time, you'll earn $50. And you get $50 if you multiply 5*10 = 50