- 1 Marks
Question
If the sales function of a company is given as
what is the marginal revenue when x = 20
A. 122
B. 120
C. 125
D. 130
E. 135
Answer
Answer: E. 135
Explanation:
Marginal revenue is the derivative of the sales function with respect to x. The given sales function is:

Thus, the marginal revenue when x = 20 is 135, corresponding to option E.
- Tags: Business Mathematics, Calculus, Derivatives, Marginal Revenue
- Level: Level 1
- Topic: Mathematics
- Series: MAY 2017
- Uploader: Kwame Aikins