To answer this question we need to calculate the difference between fish position and octopus position
Fp=3ft (fish position)
Op=-3ft (octopus position)
[tex]\begin{gathered} Fp-Op=3ft-(-3ft) \\ Fp-Op=3ft+3ft \\ Fp-Op=6ft \end{gathered}[/tex]
It means the fish is 6 ft higher than the octopus
