Ineed on this one can anybody tell me. and you.

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.

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0

What is the domain of the of the exponential function shown below?