An eighth-grade class rolls a number cube with faces labeled 1 through 6. The results of 50 rolls are recorded in the table below.
Find the relative frequency that a number less than 4 is rolled.

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Find the equation using the point (4,8)