To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 200 meters to kilometers, divide the distance by 1000 to get 0.2km then add the remaining distances:

total distance = swim + bike + run
total distance = 0.2km + 20.5km + 11.5km
total distance = 32.2km

The factors of a number are all positive integers that divide evenly into the number. The factors of 16 are 1, 2, 4, 8, 16.

To multiply terms with radicals, multiply the coefficients and radicands separately:

5\( \sqrt{4} \) x 7\( \sqrt{2} \)
(5 x 7)\( \sqrt{4 \times 2} \)
35\( \sqrt{8} \)

Now we need to simplify the radical:

35\( \sqrt{8} \)
35\( \sqrt{2 \times 4} \)
35\( \sqrt{2 \times 2^2} \)
(35)(2)\( \sqrt{2} \)
70\( \sqrt{2} \)

There are 4 5-passenger taxis available so that's 4 x 5 = 20 total seats. There are 21 people needing transportation leaving 21 - 20 = 1 who will have to find other transportation.

Average speed in miles per hour is the number of miles traveled divided by the number of hours:

Solving for time:

time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{75mi}{75mph} \)
1 hour