This Question: 1 pt The accompanying data represent the percentages of teenagers in various countries that have used certain drugs. Complete parts (a) through (c) below. Country A B C D E F G H J K Drug 1, x 22 17 40 4 36 18 22 6 7 53 35 Other Drugs, y 4 4 21 2 17 9 15 3 31 23 a. Determine the correlation coefficient between the percentage of teenagers who have used Drug 1 and the percentage who have used other drugs. r= (Round to two decimal places as needed.) b. Find the equation of the regression line for the percentage of teenagers who have used Drug 1 and the percentage who have used other drugs. y = x + () (Round to two decimal places as needed.) c. What percentage of teenagers can be anticipated to use illegal drugs other than Drug 1 in a country where 12% of teenagers have used Drug 1? % (Round to the nearest whole number as needed.)