Final answer:
The gross monthly pay for the auto technician is $2,650.20.
Step-by-step explanation:
The auto technician is paid a commission based on the number of hours he/she sells. The commission rate is $12 per hour. To calculate the gross monthly pay, we need to multiply the number of hours sold each week by the commission rate and add them all together.
First week: 45.25 hours x $12/hour = $543
Second week: 65 hours x $12/hour = $780
Third week: 32.6 hours x $12/hour = $391.20
Fourth week: 78 hours x $12/hour = $936
Gross monthly pay = $543 + $780 + $391.20 + $936
= $2,650.20