What do economists mean when they assert “being poor is expensive?”

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Topic 1: Poverty in the United States
Watch the Frontline PBS Documentary on Poverty. Read and watch additional sources provided in Module 9. Define poverty in the United States as you understand it. Integrate a response to the following questions in your essay
What do economists mean when they assert “being poor is expensive?”
What policies, if any, do you think could effectively address this phenomenon?
Offer solutions to the issue
Must have at least three quotes from the documentary. Paper needs at least five quotes.