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

should be 70+50x is less than 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

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

29 mil

step-by-step explanation: