I need help wit dis it is going in as a test grade

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

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.

Which graph has a rate of change of zero