Hi, please list out the formulas where necessary , graphs where necessary , if the question doesnt require it, its fine not have it but please do put it down if it helps you to explain . Thank you!

A consumer expects to live forever and he/she has a constant labour income of 30,000 per year, no assets, and a loan of 40,000. The nominal interest rate on the loan is 4% and inflation is 0%.

1. (a)What is the consumers' sustainable level of consumption?
2. (b)By how much will the loan increase next year if he/she consumes this amount? Explain.