Answer:
I think it is the second one i am so so so sorry if it wrong
Step-by-step explanation:
<span>Yes, this is the exchange rate. If, for example, you wanted to compare the relative value for british pounds to US dollars, you would find the exchange rate online or on one of the business TV channels</span>
Just to help you, that formula is saying that 1 mile is equivalent to 5280 feet, i.e. the number of feet is equal to 5280 * number of miles.
So, you know the number of feet = 21,120 and have to convert that into the equivalent number of miles:
f = 5280m => m = f / 5280
m = 21,120 / 5280 = 4 miles
Answer: 4 miles