What's a real world problem involving a percent greater then 100%

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

What’s the range cuz i can’t find it?

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.