Bella babysits for two families each weekend. one family pays her $20. the other family pays her $22. which expression represents the amount of money bella has been paid after w weekends?

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.