On March 13, 2020, President Trump signed a proclamation declaring that the COVID-19 outbreak in the U. S. constituted a national emergency. Sweeping changes were made throughout the nation, including social distancing, in an effort to control the spread of the virus. The graph on the next page gives the number of daily new cases of COVID-19 in the U.S. for 30 days following the proclamation. Estimate the total number of cases for this time period using rectangles of width 5 days.

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Number of cases 32,000 28,000 24,000 20,000 16,000 12,000 8000 4000 600 V 2800 10,000 30,400 19,800 0+ + 3/13 3/18 3/23 3/28 4/2 30,800 4/7 28,900 4/12