Carmine paid an electrician x dollars per hour for a 5-hour
job plus $70 for parts. The total charge was $320. Which
equation can be used to determine how much the electrician
charged per hour?
A 5x = 320 + 70
C (70 + 5)x = 320
B 5x = 320 – 70
D (70 – 5 )X = 320