Thank you for coming to Brainly with your questions!
I believe the answer is:
30x + 80y - 15z. The question tells us that she earns 30 points for each fish, and since we do not know how many, we just write 30x, then we add 80 points for each octopus, so that's + 80y, and then subtract 15 points for each time she captures a crab, so - 15z.
I hope this helps you! Please mark Brainliest! Let me know if I can help you with any further questions!
-Belle
