Answer:
They will leave a $2.205 tip (rounds to $2.21), therefore their total is $14.455 (rounded to $14.46).
Explanation:
18% of $12.25 is $2.205, which gets rounded to $2.21. Their total consist of the original cost ($12.25) and the rounded tip ($2.21): $12.25+$2.21=$14.46