Answer:
She would leave a tip of $1.28
Explanation:
So first if we add all of the expenses together we get $8.50. So her who lunch was $8.50. If she wants to leave a 15% tip, it would be 15% of her total cost so, 15% of $8.50 is 1.275. Rounded that's $1.28. She would leave $1.28 tip.