Calculate each runner's pace in minutes per mile.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Which expression is equivalent to -5(3x - 6/7)