There was a sample of 300 milligrams of a radioactive substance to start a study. since then, the sample has decayed by 1.1% each year. let be the number of years since the start of the study. let be the mass of the sample in milligrams.

The box plots show the distributions of the numbers of words per line in an essay printed in two different fonts.which measure of center would be best to compare the data sets? the median is the best measure because both distributions are left-skewed.the mean is the best measure because both distributions are left-skewed.the median is the best measure because both distributions are symmetric.the mean is the best measure because both distributions are symmetric