Question: Winning the war on poverty has been described cynically as slowing the rate at which people are slipping below the poverty line. Assuming that this

“Winning the war on poverty” has been described cynically as slowing the rate at which people are slipping below the poverty line. Assuming that this is happening:
(a) Graph the total number of people in poverty against time.
(b) If N is the number of people below the poverty line at time t, what are the signs of dN∕dt and d²N∕dt²? Explain.

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