To find the unit rate for the highway bus, we can calculate its speed based on the information provided.
The bus travels 275 miles in 5 hours, so we can find the unit rate (miles per hour) by dividing the total distance by the total time:
\[ \text{Unit rate} = \frac{275 \text{ miles}}{5 \text{ hours}} = 55 \text{ miles per hour} \]
Now, we compare this unit rate (55 mph) with the current speed of the bus (59 mph):
Since 59 mph is greater than 55 mph, we can conclude that the bus is traveling faster than the unit rate.
Therefore, the correct response is:
Faster