Answer:
B: 57 mph=57 mph
Step-by-step explanation:
A steady pace means constant speed that it does not change over a period of time and direction of motion. A simple formula, for this case (constant speed)
[tex]v= \frac{x - xo}{t -to}[/tex]
where x is distance and t time. The subtract is final value minus initial value
We have the distance and time, then
[tex]v= \frac{171 miles}{3 hours} = 57 mph[/tex]
