PLZ HELP ASAP Tina has a pet sitting business. She charges a flat service fee of $30, plus $20 per day for each animal. If one of her customers spent less than $170 on one animal, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting?
A.
$20x < $170
B.
$20x + $30 < $170
C.
$20x < $200
D.
$20x - $30 < $200