Final answer:
To find the distance the biker rode, multiply the speed and time.
Step-by-step explanation:
To find the distance the biker rode, we can use the formula:
distance = speed × time
Given that the biker traveled at an average speed of 35 m/s for 600 seconds, we can substitute these values into the formula:
distance = 35 m/s × 600 s
Simplifying the equation gives us:
distance = 21,000 meters
Therefore, the correct answer is a) 21,000 m.