Which expression is modeled by this set of arrows on the number line?

15 point ! ~ see if you know the answer to both you!

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)?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn