Answer:
-$5.27 per day
Explanation:
1st. $300
6th. $273.65
19th. $205.14
25th. $173.52
28th. $157.71
Lets use the one that has the least amount of days separated to make it easier
28th and 25th
157.71 - 173.52 = -15.81
count how many days are separated (3)
then divide that to what the amount is
-15.81 / 3 = -$5.27 per day