The revenue equation? (in hunderds of millions of? dollars) for barley production in a certain country is approximated by R(x)=0.0672x^2 + 1.1293x + 2.4393 where x is in hundreds of millions of bushels. Find the? marginal-revenue equation and use it to find the marginal revenue for the production of the given number of bushels.
?(a) The? marginal-revenue equation is R′(x)= ___
?(Round to four decimal places as? needed.)
?(b) Find the marginal revenue for the production of 100,000,000 bushels.
The marginal revenue is ___ hundred million dollars.
?(Integer or Decimal rounded to two decimal places as? needed.)
?(c) Find the marginal revenue for the production of 950,000,000 bushels.
The marginal revenue is ___ hundred million dollars.
?(Integer or decimal rounded to two decimal places as? needed.)