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    Functions and Change A Modeling
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    Exam 28: Rates of Change for Other Functions
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    Let Denote Sales When a Dollars Are Spent on Advertising.We
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Let Denote Sales When a Dollars Are Spent on Advertising.We

Question 17

Question 17

Multiple Choice

Let Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. ? ​​​


A) Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. is positive.
B) Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. is negative.
C) Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. is 0.
D) The value of Let   denote sales when a dollars are spent on advertising.We find that s has reached its maximum value.What is the value of   ? ​​​ A)    is positive. B)    is negative. C)    is 0. D)  The value of   cannot be determined. cannot be determined.

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