What is the point of the circular flow model, economics homework help

1)Trace through the circular flow model in attached file! 

What is the point of the circular flow model, what are some leakages and injections into the circular flow model, and how are the leakages and injections related to the circular flow? 150 words

2)If actual inflation exceeds anticipated inflation, who will lose purchasing power, and who will gain? How does unanticipated inflation harm the country? As part of your answer, include how you and your employer would both be affected. 150 words- Dont use any attached file for this, just sources and opinion 

Thanks!

( on faded part it says financial markets on the image)

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