Which isn't the least expensive per oz rounded to the nearest cent 20oz for $1.79 or 2 pounds 2 oz for $2.59

This problem calls for calculating the unit cost in each case and then comparing the unit costs.

$1.79

= $0.09/oz

20 oz

Noting that 1 lb = 16 oz,

$2.59

= $0.14

18 oz

$1.79 for 20 oz is definitely the better buy (less expensive) when compared to $2.59 for 18 oz.

the answer is y = 11.54

hope this : )