If x plus 4 equals 12 then x equals 8

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

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

Quadrilateral opqr is inscribed inside a circle as shown below. what is the measure of angle q? you must show all work and calculations to receive credit. circle n is shown with an inscribed quadrilateral labeled opqr. o is labeled 2x degrees. p is labeled y degrees. q is labeled 2x plus 4 degrees. r is labeled 3y plus 8 degrees.