To find the unit price of a light bulb, you can divide the total cost by the number of bulbs in the pack.
Given that a 3-pack of light bulbs costs $5.13, you can calculate the unit price as follows:
\[ \text{Unit Price} = \frac{\text{Total Cost}}{\text{Number of Bulbs}} = \frac{5.13}{3} \]
Calculating this:
\[ \text{Unit Price} = \frac{5.13}{3} \approx 1.71 \]
So, the unit price of each light bulb is approximately $1.71.