Answer:

Step-by-step explanation:
This is a conversion of units problem, so first you have 4.8 km and you need to convert it to feet.
First you take the quantity you need to convert:
4.8km
Then you put a factor, in the denominator you put the conversion factor with the same units that the number that you want to convert, that is:

Then in the numerator you put the second unit that you have, in this case, the problem gives you that 1 mile = 1.609km, so:

Then, as the problem says that convert the 4.8km to feet, you put the next factor in the same way:

Finally, you multiply the initial quantity and the numerators and divide by the denominators, and you have:

