Answer:
5.41
Step-by-step explanation:
she will have spent 21 hours on the phone
6 hours in 2 days
6 divided by 2
3 hours a day
7 days a week
3 multiplied by 7 = 21
(3.5, 5) is my answer
47.5%
, that is, $20 for profit! Not much, I suppose...