Does anyone know the answer and how I should do this?

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)?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

15 points what is the end behavior of this graph? & what is the asymptote of this graph?