Use the Maximum/minimum Finder on a Graphing Calculator to Determine $$f ( x ) = 0.1 x ^ { 3 } - 15 x ^ { 2 } - 39 x - 85$$

question 28

Multiple Choice

Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.
- $$f ( x ) = 0.1 x ^ { 3 } - 15 x ^ { 2 } - 39 x - 85$$

• A) Approximate local maximum at -1.284; approximate local minimum at 101.284
• B) Approximate local minimum at -101.284; approximate local maximum at 1.284
• C) Approximate local maximum at -101.284; approximate local minimum at 1.284
• D) Approximate local minimum at -1.284; approximate local maximum at 101.284

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