Ashley is diving in the ocean. she wants to reach a coral reef that is 60 feet below sea level; that is, the reef’s elevation is -60 feet. she decides to safely descend to the reef from the ocean’s surface in increments of 10 feet. answer the following questions to learn more about ashley’s rate of descent.

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

About 60% of the normal humanbeing's body weight is composed ofwater. how much of a 125 poundperson is water weight? f 72 pounds h 76 poundsg 75 pounds i 80 pounds

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)