Heather's mom says that they would save more than $100 if they buy 4 tickets for their family on opening weekend. do you agree or disagree with heather's mom? us numbers and words to support your answer.

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)?

Having a hard time understanding this question (see attachment).

What is the 8th term of the geometric sequence with this explicit formula? an= )(n-1)