To find the total amount of money a person will pay for a gallon of milk in a city that applies a 4.5% sales tax, let's follow these steps:
1. Identify the Cost of the Gallon of Milk:
The cost of a gallon of milk is given as [tex]\( \$3.50 \)[/tex].
2. Determine if the Gallon of Milk is Subject to Sales Tax:
According to the table, the gallon of milk is not subject to sales tax.
3. Calculate the Total Cost:
Since the gallon of milk is not subject to sales tax, the total cost is simply the cost per item, which is:
[tex]\[
\text{Total Cost} = \$3.50
\][/tex]
4. Round to the Nearest Cent:
The cost is already provided in cents as [tex]\( \$3.50 \)[/tex], so no additional rounding is necessary.
Therefore, the total amount of money a person will pay for a gallon of milk is [tex]\(\boxed{3.5}\)[/tex].