One possible way:
-86+(4*12)=-38
-86 is the number where the diver is. 86 feet below the surface.
4*12 is the total number of feet he has ascended in 12 minutes.
Because he is ascending, so you add 4*12 (or 48) to -86.
The answer is -38, meaning he's 38 feet below the surface.
The diver is now 38 feet below the surface.
Hope this helps.
Given the function f(x);

Evaluating the function f(x+h);

So;

Evaluating the second function;

simplifying further;

Therefore, we have;
Answer- 28 classes
Step-by-step explanation:
822-150= 672 672/24 = 28