HELP WHAT PERCENT IS THE SALES TAX?

Landon wrote that 3−2.6=4. which statement about his answer is true?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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.