Carolyn paid a mechanic x dollars per hour for a 5-hour job plus $70 for parts. The total charge was less than $320. Which equation can be used to determine how much the mechanic charged per hour?
A. 5x<320+70
B. 5x<320-70
C. (70+5)x<320
D.(70-5)x<320
Step-by-step explanation:$70 is only added once, and for 5 hours, she pays him a certain amount of $(x). I don't know if the multiple choices are valid
