Laura bought 8 3/10 yd of ribbon. she used 1 2/5 yd to tie a package and 2 1/3 yd to make a bow. joe later gave her 4 3/5. how much ribbon does she have now

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

How do i do this? i don’t understand

Is this a polynomial function? i need to know asap