6 + 12 ÷ 3 − 2 ⋅ 4 a. What is the value of the expression? b. Use grouping symbols so the expression has a value greater than the value from part a. C. Use grouping symbols so the expression has a value less than the value from part a

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