Final answer:
Leslie can buy a maximum of 4 boxes of Chi Lattes with her $60 gift card.
Step-by-step explanation:
To determine the maximum number of Chi Lattes Leslie can buy without spending more than her gift card, we need to consider the cost per box, the shipping charge, and the amount on her gift card. Each box costs $12 and there is a $3 shipping charge. Subtracting the shipping charge from her gift card amount, we have $60 - $3 = $57. To find the number of boxes she can buy, we divide $57 by $12: $57 รท $12 = 4 remainder 9. Since Leslie cannot buy a fraction of a box, the most boxes she can buy is 4. Therefore, the correct answer is a) 4 boxes.