MATH HELP I need to submit this but how do I do this:
Find the value of x. Round your answer to the nearest tenth.

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.

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday