Answer: :The 2-litter bottle is the better buy because it is less expensive than two of the 1-litter bottles of soda."
Step-by-step explanation: If you were to buy 2 1-litter bottle of soda, you would be paying $1.98 for 2 1-litter bottles instead of paying the better price for 1 2-litter bottle of soda which costs $1.59.
$0.99 x 2 = $1.98 for 2 1-litter bottles of soda, which equal a total of 2 litters.
$1.59 for 1 2-litter bottle of soda, which also equals a total of 2 litters.
So, a 2-litter bottle of soda is worth it, because you as well will save $0.39