last one! please please help! THANKS!!!
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Hey! It looks like here, each week the amount is doubled the week before.
$1 - $2 - $4 - $8 - $16 - $32 - $64 - $128
So, we count up all the numbers, and we get 8 different totals. This would mean that on week 8, Kim can buy her bike! Hope this helped :)