Question: The graph shows the Dow Jones Industrial Average on a particularly tumultuous day soon after the U.S. credit rating was downgraded from AAA to AA+

The graph shows the Dow Jones Industrial Average on a particularly tumultuous day soon after the U.S. credit rating was downgraded from AAA to AA+ in 2011. If t represents the number of hours after 9:30 a.m., then the graph defines the Dow Jones Industrial Average D as a function of time t. If we represent this function by D = f (t), use the graph to complete the following.

(a) Find f(0) and f(6.5).

(b) Find the domain and range for D = f (t) as defined by the graph.

Dow Jones Industrial Average

11,300 I1,200 II,100 11,000 10,900 мA, 10,800 - Down S0.00 Close - 10,719.94 10,700 10,600 + 10 am. Noon 2 p.m. 4 p.m.

11,300 I1,200 II,100 11,000 10,900 A, 10,800 - Down S0.00 Close - 10,719.94 10,700 10,600 + 10 am. Noon 2 p.m. 4 p.m.

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