ANSWER:
Brand B
STEP-BY-STEP EXPLANATION:
To know which of the two options is the cheapest, we must calculate the unit price, we can do it like this:
[tex]\begin{gathered} A=\frac{22.75}{7}=\text{ \$3.25} \\ B=\frac{12.72}{4}=\text{ \$3.18} \end{gathered}[/tex]Therefore, the value for Bran A is $3.25 and Brand B $3.18, therefore Brand B is cheaper