a data set is symmetrical with a mean of 100 and a standard deviation of 5. About what percent of the data is between 90 and 105?

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence. then write an expression to find dario's text messaging bill if he sends n text messages over 250.

The function models the number of accidents per 50 million miles driven as a function

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.