If multiplying by one fourth makes a positive number smaller then why does dividing by one fourth do the value of the number explain your reasoning

Which statement best describes the polynomial

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.

Find the zeros of each function. f(x) = x^2 + 5x - 6