It would be written as a fraction to make the exponent negative put it over one : 1/7^4
For this case we have to write the equation of the position of each one.
We have then:
For the robber:

For the marshall
:


By the time the marshall reaches the robber we have:

From here, we clear the time.
We have then:




Answer:
it takes the marshall to catch up to the robber about 2.7 hours.
Answer:
0.5 is the answer to this