Please help me with my hw thank you so much

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.

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

How do you summarize data in a two-way frequency table?