Help me out please

the answer is 5/3x+7/5y+7

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

i would say true? if the unit was informational and it "refreshed your understanding", then true.