What are the answers to the first 3??

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.