To determine if the bus is going faster, slower, or at a rate equal to its unit rate, we first need to calculate the bus's unit rate based on the information given.
The bus travels 275 miles in 5 hours. We can find the unit rate (miles per hour) by dividing the total miles by the total hours:
\[ \text{Unit rate} = \frac{\text{Total miles}}{\text{Total hours}} = \frac{275 \text{ miles}}{5 \text{ hours}} = 55 \text{ miles per hour} \]
Now, we compare the calculated unit rate (55 miles per hour) with the current speed of the bus (59 miles per hour).
Since 59 miles per hour is greater than 55 miles per hour, the bus is currently traveling faster than the unit rate of 55 miles per hour.