ANSWER
25 cents per ounce
EXPLANATION
We want to convert $4/lb to cents per ounce.
It is important to note that $/lb is written as:
[tex]\frac{\text{ \$}}{lb}[/tex]Now, to convert to cents per pound, we will have to multiply by 1 dollar (in cents) and divide by 1 pound (in ounces).
In other words, we will convert 1 dollar to cents and 1 pound to ounces.
We have that:
1 dollar = 100 cents
1 pound = 16 ounces
So, we will do:
[tex]\begin{gathered} 4\cdot\text{ }\frac{1}{1}\cdot\text{ }\frac{100}{16} \\ =\text{ }\frac{4\cdot\text{ 100}}{16} \\ =\text{ 25 cents per ounce} \end{gathered}[/tex]So, that is the answer.