Find the simple interest earned. $5,000 invested at 4% for 3 years. pls

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.

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The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.