You used an app to hire a repair worker to do a series of small repairs around your office. The workers charge $54 for the first hour, and $15.50 for each additional 15 minutes. If the worker charge you $162.50, how long did the repairs take? A three hours, 15 minutes be two hours, 25 minutes see two hours, 45 minutes D4 hours, 30 minutes

Which product is positive a is 2/5 -8/9 -1/3 -2/7 b is -2/5 8/9 -1/3 -2/7 c is 2/5 8/9 1/3 -2/7 d is -2/5 -8/9 1/3 2/7

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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.