Given(week): initial payment - $380 + commissions (2.2%)
gross pay $1395
Lets try to come up with a formula to help solve this problem.
t = sales total
$380 + (2.2% * t ) = $1395
380 + 0.022t = 1395
0.022t = 1015
t = 1015/0.022
t = 46,136.36
Answer: The salesperson sold a total of $46,136.36
I hope this help.
Please feel free to reach out to me for more clarification.