If a bank charges $1.50 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 $19.50 monthly service fee?
A.) $1.50+x=$19.50
B.) $1.50x=$19.50
C.) $19.50x=$1.50
D.) $19.50+x=$1.50