In a lab experiment, 60 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 12 hours. How long would it be, to
the nearest tenth of an hour, until there are 151 bacteria present?

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.

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Asphere has a diameter of 10 in. what is the volume of the sphere?