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.

Question

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.

Quizplus · Accepted Answer

The Answer 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.

Let Denote Sales When a Dollars Are Spent on Advertising.We