Reptile sand is sold for $8 a bag. vitamin pellets are sold in packs of 12 for $6. michael bought 2 packs of vitamins and one bag of sand. which equation shows how much michael spent, where m represents the amount he spent? $8 (2 �� $6) = m ($8 �� 2) $6 = m $8 $12 $6 = m 2($8 �� $6) = m