To compare the unit rates of rainfall between Phoenix, Arizona, and Jacksonville, Florida, we need to express the rainy days for both cities on a yearly basis.
- Phoenix: 33 rainy days per year.
- Jacksonville: 10 rainy days per month × 12 months = 120 rainy days per year.
Now we can see that Jacksonville has 120 rainy days per year compared to Phoenix's 33 rainy days per year. Therefore, Jacksonville has a higher unit rate of rainfall.
The correct answer is: Jacksonville, because Jacksonville has 120 rainy days per year and Phoenix has only 33 rainy days per year.