Please help me im doing an iready lol

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Factor the expression using the gcf. the expression 21m−49n factored using the gcf