If a bank charges $0.75 for each ATM transaction linked to a checking
account, which of these equations can be used to solve for the number of
monthly ATM transactions x that is equivalent to a $12.75 monthly service
fee?
A. $0.75 + x = $12.75
B. $0.75x = $12.75
C. $12.75 + x = $0.75
D. $12.75x = $0.75