Cuanto es 6a-1,si a=2 con procedimiento por favor sustitucionandolo

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

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

In which form is the following function written? y = - 2(x – 3)(x + 5)