I am having some trouble with related rates and would like some confirmation if I am on the right track and approaching the questions correctly. I have attached a few related rates problems that I have worked through below.
The Attempt at a Solution
The questions along with my attempt at the solution has been attached below (the answers for #4 are meant to be negative since water is leaking out). Am I on the right track with these problems? Which questions am I doing incorrectly? Thanks. All help is very much appreciated!