The total revenue from selling $x$ units is $R(x) = 13x^{2} + 26x + 15$ rupees. What is the marginal revenue when $x = 7$ ?

₹117Correct answerYour answer₹182Correct answerYour answer₹208Correct answerYour answer₹834Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer C

Correct answer: C

Worth noting

₹182 leaves out the 26 from differentiating $26x$ .

Ten questions from Rate of Change, Marginal Cost & Revenue, at your own pace.

Ten questions from Rate of Change, Marginal Cost & Revenue, at your own pace.

The total revenue from selling xxx units is R(x)=13x2+26x+15R(x) = 13x^{2} + 26x + 15R(x)=13x2+26x+15 rupees. What is the marginal revenue when x=7x = 7x=7?