A theater offers a 20% discount to senior citizens on all tickets. The regular cost of a matinee ticket is $9.75.


Which expression represents the cost of a matinee ticket after the discount is applied?

A$9.75 1/5

B$9.75 4/5

C$9.75 6/5

D$9.75 9/5

Thank you for helping me! Also, if you do answer could you explain how you got your answer, it would really help me understand it more. Thanks! <3