To calculate the total price for a 24 ounce package with a unit price of 13.5 cents per ounce, you can use the following formula:
\[ \text{Total Price} = \text{Unit Price} \times \text{Quantity} \]
First, convert the unit price from cents to dollars:
\[ 13.5 \text{ cents} = 0.135 \text{ dollars} \]
Now multiply the unit price by the quantity:
\[ \text{Total Price} = 0.135 \text{ dollars/ounce} \times 24 \text{ ounces} \]
\[ \text{Total Price} = 3.24 \text{ dollars} \]
Therefore, the total price for the 24 ounce package is $3.24.
The correct answer is d. $3.24.