Answer:
( 13*16) - 6
Explanation:
there are 13 cases containing 16 bottles.
janelle has drank 6 bottles of water
the formula she created was (16 - 13) x 6
the error is that 6 needs to be deducted from the total bottles
and the cases needs to be multiplied by the bottles
= ( 13*16) - 6
the corrected expression is : ( 13*16) - 6