So looking at this our answer would be C because when you are trying to find if it is not a function you have to look for repeated X values or domains if there I s a problem with a repeated X value that would not be a function but if the Y values were to repeated that doesn’t really matter so yeah. Hopefully this helps!
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
