Given f(x)=3x+1, solve for x when f(x)=7

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.

7+(3n++8) what is the answer to this?

Find the slope of the line that passes through the points (-3, -1) and (0, 3). 3/4 0 4/3