The answer would be 68x-72
The ODE is separable:

Integrating both sides gives

Answer:
845
Step-by-step explanation:
I think that's what it's asking??
2 kids cross, one brings the boat back, one parent crosses, the other kid brings the boat back, both kids cross again, one kid brings the boat back, other parent crosses, the other kid brings the boat back, both kids cross again, one kid brings the boat back, the fisherman crosses, the other kid brings the boat back, both kids cross again. the fisher man is on the side where the kids and parents are. he can take the boat. total trips 11.