Answer:
Boxes will she sell all together are:
 93
Step-by-step explanation:
We are given that:
A girl scout sells 3 boxes of cookies during week 1.
She has a goal to sell twice as many cookies each week as she did the week before.
WEEK Â Â NUMBER OF BOXES SOLD
 1          3
 2          6
 3          12
 4          24
 5          48
Hence, total number of boxes sold= 3+6+12+24+48
                             = 93