If 4x + 5y =10 and x + 3y = 8, then (5x+8y)/3
(a) 18
(b) 15
(c) 12
(d) 9
(e) 6

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.