You save $1 the first day of the month, $2 the second day, $4 the third day, continuing to double your savings each day. what will your savings be for the first 15 days?

Try this solution:
1. In order to calculate the total sum for the first 15 days, it need to calculate the sum of the first 15 terms of the geometric sequence: 1; 2; 4; 8; 16;... etc.2. using the formula (a₁=1; q=2; n=15):
32767 $

Your answer should be 1/3. i hope i could ! good luck : )