Garrett earned $410.60 in net pay for working 37 hours. He paid $159.61 in federal and state taxes, and $66.37 in FICA taxes. To find his hourly salary, we just need to find his actual salary(his net pay plus the value he paid in taxes) and divide by the total amount of worked hours.
His earnings before taxes are given by his net pay plus the tax values

Since he worked 37 hours, his hourly salary is given by

His hourly salary is $17.20.