$2 day 1,
At day 1 the amount is $1
then $4 more each day
then after 1 day, $4 amount is add on each day
then the toal amount after 14 days
So, Total amount = Amount at first day + Amount after 1 day to its 14day
Total amount = Amount at first day + 4(13 days)
Total amount = $2 + $4(13)
Total amount = 2 + 52
Total amount=$54
The amount before 14 days = $54