please show formulas and clear hand writting if so.

thank you in advance!

income for one's to more det. Suppose my Advice from most financ i ers states to spend no more than 20 of one's gros y come for one's mortgage payment and to spend more of one's gross more has a grossa come of $30.000 W ie amount they should spend each mohon among payment b. What is the maximum amount the family should spend each month for all credi to? e. the family's money morgage payment is 70of the maximum they can or what is the maximum amount they should spend each month for other det? a. The maximum mo m oloage payment should be $ . The maximum month total credit obligations should be $ c. The maximum amount they should spend monthly on the debt is