81, 27, 9, 3, . . is this arithmetic or geometric?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

You work for a lender that requires a 20% down payment and uses the standard depth to income ratio to determine a person‘s a little eligibility for a home loan of the following choose the person that you would rate the highest on their eligibility for a home loan

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5