Answer:
Jenna's net tax payment is $ 633.6
Explanation:
because;
$9 * 20 hour * 1 week = $180 h/w
$180 h/w * 4 week/ 1month = $720 h/m
$9 * 8 hours * 1 sunday = $72 h/s
$720 + $72 = $792 - 20% taxes = $633.6
$633.6 is jenna's basic salary
monthly expenses of $83.33
$633.6 - 83.33 = 550.27.
Monthly savings for the trip to Mexico is $125