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The total revenue (in dollars) from the sale of a toasters isR(x) = 50 - 0.1x^2Evaluate the marginal revenue at the following values:(A) R'(400)(B) R'(650)

Answer :

Given the function

[tex]R(x)=50-0.1x^2[/tex]

Then, R'(x) is:

[tex]R^{\prime}(x)=-2(0.1)x^{2-1}=-0.2x[/tex]

Therefore:

A) R'(400)

[tex]R^{\prime}(400)=-0.2(400)=-80[/tex]

Answer: - $80

B) R'(650)

[tex]R^{\prime}(650)=-0.2(650)=-130[/tex]

Answer: -$130

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