Help me with this question!

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

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Combine the information in the problem and the chart using the average balance method to solve the problem.