Answer:
Step-by-step explanation:
what you need to do is look at the question again it say 10 feet above sea level and the other one is 7 feet below sea level. now read your question again hope you find the answer good luck
Answer:
you are right
Step-by-step explanation:
81 is the correct answer
hope it helps you have a good day
Answer: 60
Step-by-step explanation:
