To know which one is a better deal, we have to find the maximum rate of volume to dollar.
We have to calculate it for each one as:
[tex]U_1=\frac{12\text{ oz}}{0.99\$}\approx12.12\text{ oz/\$}[/tex][tex]U_2=\frac{32\text{ oz}}{1.99\$}\approx16.08\text{ oz/\$}[/tex][tex]U_3=\frac{128\text{ oz}}{4.99\$}\approx25.65\text{ oz/\$}[/tex][tex]U_4=\frac{64\text{ oz}}{2.99\$}\approx21.40\text{ oz/\$}[/tex]The option that gives us more volume per dollar is the option of 128 oz for $4.99.
Answer: 128 oz.
