Find the solution(s) of the system of equations. x2 + y2 = 18 y = x + 6 Question 1 options: A) (3, 3) and (–3, –3) B) (–3, 3) and (3, 9) C) (–3, 3) D) (3, 9)

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.