Can I get help for these Algebra questions?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

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.

Analyze the diagram below and complete the instructions that follow. how to find tan