Question

Suppose that the revenue in dollars from the sale of x campers is given by the formula shown below.

R(x) = 58,000x + 38,000(10 + x)−1 − 4000

(a) Find the marginal revenue when 10 units are sold.

Answer 1

R'=58000-38000/(10+x)^2
Go figure when x=10

Answer 2

I'm sorry. Looking back at the question I posted, I forgot to made -1 an exponent. It should read:

R(x)= 58,000x + 38,000(10+x)^-1 - 4000