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 $190 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 + $30 < $190
B.
$20x < $190
C.
$20x < $220
D.
$20x - $30 < $220

1 answer

A. $20x + $30 < $190

This inequality would represent the total cost for x number of days of pet sitting being less than $190 for one animal.