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?

Question

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

GPT 3.5 · 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.