Answer:
b and c
Step-by-step explanation:
The gcf is 3 because that is thier greatest common factor that isn't 1
So a diver went 25.65 ft BELOW so it's negative.
then he went 16.5 ft further down, so that's negative also.
he then rose 12.45 ft, so that's positive.
so the expression is: -25.65+-16.5+12.45, the answer is 23.7
The answer to your problem is 17