1. 3x + 7 = 9x - 11 2. 5m - 8 = m - 44
3. 6p - 10 = 7p - 49
4. 9b - 11 = 11b + 9
5. 7y + 40 = 11y + 64
6. 4k - 5 = 7k + 10
7. 3m + 20 = 7m - 16
8. 4a + 11 = 11a - 3
9. 10w + 6 = 2w - 42
10. 3z - 25 = 50 - 2z

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.