Answer: First option is correct.
Step-by-step explanation:
Since we have given that
$12.60 for 7 bottles of juice.
then, cost of each bottle of juice would be
![\dfrac{12.60}{7}=\$1.8](https://tex.z-dn.net/?f=%5Cdfrac%7B12.60%7D%7B7%7D%3D%5C%241.8)
$10.98 for 6 bottles of juice.
then, cost of each bottle of juice would be
![\dfrac{10.98}{6}=\$1.83](https://tex.z-dn.net/?f=%5Cdfrac%7B10.98%7D%7B6%7D%3D%5C%241.83)
$18.10 for 10 bottles of juice.
then, cost of each bottle of juice would be
![\dfrac{18.10}{10}=\$1.81](https://tex.z-dn.net/?f=%5Cdfrac%7B18.10%7D%7B10%7D%3D%5C%241.81)
$16.38 for 9 bottles of juice.
then, cost of each bottle of juice would be
![\dfrac{16.38}{9}=\$1.82](https://tex.z-dn.net/?f=%5Cdfrac%7B16.38%7D%7B9%7D%3D%5C%241.82)
Hence, $12.60 for 7 bottles of juice is the best buy as it is the cheapest one.
Therefore, First option is correct.