Tina pet sits to earn extra money. she charges a flat service fee of $20, plus $20 per day. if one of her customers spent less than $80, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting? a) $20x + $20 < $80b) $20x < $80c) $20x - $20 < $80d) $20x < $100

option A is the correct answer.

Step-by-step explanation:

Let x represent the number of days the customer paid for pet sitting.

She charges a flat service fee of $20, plus $20 per day. This means that the total amount that she charges for x hours would be

20 + 20x

If one of her customers spent less than $80, then the inequality that could be used to solve for x would be

$20 + $20x < $80