Leading Economic Indicators The value of the Conference Board Index of 10...

Leading Economic Indicators The value of the Conference Board Index of 10 economic indicators in the United States could be approximated by the following function of time t in months since the end of December 2002:

a. Estimate E(10), E(15), and E(20) and interpret the results.

b. Sketch the graph of E and use your graph to estimate when the index first reached 115.

c. Use technology to generate a table of values for E(t) with t = 6, 7, . . . , 20.