An arithmetic sequence is represented by the explicit formula A(n)=2-5(n-1). What is the recursive formula?

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)?

When you answer this can you explain

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base