I need help with problem pleasee look at the attachment.

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

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.

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i