PP-Increasing/Decreasing The following represents the Total Cost function for producing a product. Cost B C D # sold 1. At which point is the cost increasing? 2. At which point is the cost decreasing? 3. At which point is the cost neither increasing nor decreasing? Draw a tangent line to the curve at each of the labeled points. 4. At which point is the slope of the tangent positive? 5. At which point is the slope negative? 6. At which point is the slope zero 7. For which graph below do the slopes of the tangents, reading left to right, change from Positive, to Negative and then Positive? A. B. C. D. AV 8. A function is graphed below. What is the sequence of signs of its slopes, reading from left to right? A. Pos, Neg, Pos, Neg, Pos B. Neg, Pos, Neg, Pos C. Neg, Pos, Neg, Neg D. Pos, Pos, Neg, Pos

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