Step 1 :Given the speed is 2.8 miles per minute.
Step 2 :We know that there are 60 minutes in an hour.
Step 3 :To convert miles per minute to miles per hour, we multiply the given speed by the conversion factor, which is 60 minutes per hour.
Step 4 :So, the speed in miles per hour is \(2.8 \times 60 = 168.0\) miles per hour.
Step 5 :Final Answer: The speed of 2.8 miles per minute is approximately \(\boxed{168.0}\) miles per hour.