To calculate marginal revenue, find the derivative of the revenue function, and then substitute number of units

into the derivative function.

Therefore,  becomes: , which becomes:  ----- Substituting 21 for y

, or .

You can do the check!! 



Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com.

Further help is available, online or in-person, for a fee, obviously. 



For FREE info and answers to questions about the ASVAB exam, the NYS 3 – 8 city/state wide exams,GENERAL

MATH and HOMEWORK QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra, 

Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE,

GRE, CLEP, and the TASC/GED, you can visit: http://asvabstudyzone.freeforums.net/. 

RELATED QUESTIONS

A manufacturer has total revenue given by the function R=130x and has total cost given by  (answered by stanbon)

a manufacturer finds that the total cost C for a product is expressed by C=250x^2 -... (answered by Fombitz)

A manufacturer finds that the revenue generated by selling x units of a certain commodity  (answered by solver91311)

A manufacturer finds that the revenue generated by selling x units of a certain commodity  (answered by edjones)

The revenue function in terms of the number of
units sold ,x, is given as
R =... (answered by htmentor)

A widget manufacturer estimates that her monthly revenue can be modeled by the function... (answered by ikleyn,math_tutor2020)

A company's revenue function, in millions of dollars, is given by R(x) = -(x - 500)^2 +... (answered by Boreal)

The revenue for a small company is given by the quadratic function r(t)=8t2+12t+750 where  (answered by lwsshak3)

Here is my question:
The total revenue from the sale of a popular book is approximated... (answered by solver91311)