I am having a hard time with this problem will you help me please?​

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

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)?

Simplify the following expression 48^1/2