A scuba diver dove from the surface of the ocean to an elevation of −99

9
10
feet at a rate of −30.7 feet per minute. After spending 14 minutes at that elevation, the diver ascended to an elevation of −8
9
10
feet. The total time for the dive so far was 21
1
8
minutes. What was the rate of change in the diver's elevation during the ascent? Round your answer to the nearest hundredth.

1 answer

what are all these broken lines? Just type the numbers you want to use.

And if you want to use fractions, just type them normally, as in 3/4, 1/8, etc.

I spell copy/paste from some word processor. A big clue is the garbled line feeds and the em-dash minus signs.