Which of the following sequence of transformations would a polygon onto itself?

a. reflect over the x-axis, then rotate 90°, then
reflect over the y-axis

b. reflect over the x-axis, then rotate 90°, then
reflect over the line y = x

C. rotate 90°, then reflect over the line y = x,
then rotate 180°

d. rotate 180°, then reflect over the line y = x

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.