Assertion (A): If $MR = 50 - 4x$ , the demand function is $p = 50 - 2x$ .
Reason (R): Revenue is price times quantity, so $p = \frac{R(x)}{x}$ .

Both A and R are true, and R is the correct explanation of A.Correct answerYour answerBoth A and R are true, but R is not the correct explanation of A.Correct answerYour answerA is true, but R is false.Correct answerYour answerA is false, but R is true.Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

$R(x) = 50x - 2x^{2}$ , so $p = \frac{R(x)}{x} = 50 - 2x$ . A is true.
R is the step that turns revenue into price, so it explains A.

Concept: From revenue to price
Typical timeTypical: 90 s
Your timeYours: —

The rule this testsRevenue and demand from marginal revenue

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Assertion (A): If MR=50−4xMR = 50 - 4xMR=50−4x, the demand function is p=50−2xp = 50 - 2xp=50−2x.Reason (R): Revenue is price times quantity, so p=R(x)xp = \frac{R(x)}{x}p=xR(x)​.

Explanation

Assertion (A): If $MR = 50 - 4x$ , the demand function is $p = 50 - 2x$ .
Reason (R): Revenue is price times quantity, so $p = \frac{R(x)}{x}$ .