If you have a graphing calculator with table-making ability, display a table showing the (approximate) values of the given function at x = 3.5, 3.9, 4.3, 4.7, 5.1, and 5.5. (See Example 1.)
g(x) = 3x4 − x3 + 2x
Example 1
Business
Use the table feature of the graphing calculator to find the projected sales of the company in Example 10 for years 5 through 10.
Enter the sales equation y = .07x2 − .05x3 + 2x2 + 7x + 62 into the equation memory of the calculator (often called the Y = list.) Check your instruction manual for how to set the table to start at x = 5 and go at least through x = 10. Then display the table, as in Figure 3.2. The figure shows that sales are projected to rise from $184, 500 in year 5 to $982, 000 in year 10.
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