Andy is scuba diving. He starts at sea level and then descends 10 feet in 2.5 minutes.

0.9 miles

Step-by-step explanation:

Firstly we need to remember that there are 60 minutes in an hour.

She rides 27 miles per hour meaning she rides 27 miles per 60 minutes.

Her rate is thus:

27/60 = 0.45 miles per minute

Now we need to know the number of miles she will travel in 2 minutes

We simply get this by multiplying the rate by the time and that is 2 * 0.45 = 0.9 miles