Answer:
52.5
Explanation:
Since d = 10.5t, we need to find the time (t). In this case, the time is 5 hours. Substitute the variable with the given number, then multiply to find out the time:
d = 10.5t
t = 5 hours
d = 10.5(5)
d = 52.5
So, the distance is 52.5 :D