Craig has a job waiting tables where he earns $3.45 per hour plus tips. Craig earned $78.30 in tips during his shift yesterday.

If x represents the number of hours Craig worked yesterday, which of the following equations can be used to find the amount of money Craig earned yesterday?
A.
y = 3.45x - 78.3
B.
y = 78.3x - 3.45
C.
y = 78.3x + 3.45
D.
y = 3.45x + 78.3