Advice from moct financial advisers states to spend no more than $28\%$ of one's gross monthly income for one's mortgage payment, and to spend no more than $36\%$ of one't alobe monthly income for one's total monihly debt. Suppose a fanly has a gross annual ncome of $$39,600.$

a$.$ What is the maximum amount the famlly should spend each monith on a mortgage payment?

b$.$ What is the maximum amount the family should spend each month for total credit obligations?

c$.$ If the family's monthly morigage payment is $80\%$ of the maximum they can afford, what is the maximum amount they should spend each month for all other debt?

a$.$ The maximum monthly mortgage payment should be $$$