Kai calculates that he spends 15% of a school day in science class. If he spends
75 minutes in science class, how many
minutes does Kai spend in school?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?

For breakfast, clarissa can choose from oatmeal, cereal, french toast, or scrambled eggs. if she selects a breakfast at random, what is the likelihood that she will choose oatmeal?