Kendra is going faster. You could convert Kendra's measurement to feet per second by doing to following:
0.25 mi/1 min x 5280 ft/1 mi x 1 min/60 sec
Which equals:
(0.25)(5280)ft/60 sec
Simplify, and Kendra's speed is 22 feet per second.
mi= mile(s)
min= minute(s)
ft= feet
sec= second(s)
We know that the ocean floor has a depth of 247 ft, and we also know that the diver is<span> underwater at depth of 138 ft, so its distance from the ocean floor will be:
</span>

ft
<span>
Now, the </span>rock formations rises to a peak 171 to above the ocean floor, so to find <span>how many feet below the top of the rock formations is the diver, we are going to subtract the distance to the driver form the ocean floor from the rock formations height:
</span>

ft
<span>
We can conclude that the diver is 62 feet </span><span>
below the top of the rock formations.</span>