What do the properties of polynomial addition mean? Complete each statement. The closure property states that the sum of two polynomials is a
.

The commutative property states that changing the order of two or more terms

the value of the sum.

The associative property states that the way in which two or more terms are grouped in a sum

the value.

Will make ! for correct answer the dot plot below shows the number of toys 21 shops sold in an hour.is the median or the mean a better center for this data and why? a. median; because the data is not symmetric and there are outliersb. median; because the data is symmetric and there are no outliersc. mean; because the data is symmetric and there are no outliersd. mean; because the data is skewed and there are outliers