Question

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 1

Given the function

$R(x)=50-0.1x^2$

Then, R'(x) is:

$R^{\prime}(x)=-2(0.1)x^{2-1}=-0.2x$

Therefore:

A) R'(400)

$R^{\prime}(400)=-0.2(400)=-80$

Answer: - $80

B) R'(650)

$R^{\prime}(650)=-0.2(650)=-130$

Answer: -$130