Question 1188981
<br>
The formula for the sum of a finite number of terms of a geometric series is something you should know and be able to use.<br>
However, for a problem like this, with a small number of terms and "nice" numbers, the fastest path to the solution is to find the terms of the sequence and add them until you reach the goal.<br><pre>
     day  # today  total #
   ------------------------
      1      3      3
      2      9     12
      3     27     39
      4     81    120
      5    243    363
      6    729   1092</pre>
The first day when the total is greater than 700 is day 6.<br>
ANSWER: 6<br>