Under a contract with valley vineyard, walsh begins grading a terraced hillside for the planting of grapes. halfway through the project, walsh asks for $5,000 over the contract price, claiming an increase in the "cost of doing business." valley agrees but later refuses to pay. valley’s agreement to pay more is

Some years ago it was estimated that the demand for steel approximately satisfied the equation p=194-25x x, and the total cost of producing x units of steel was upper c left parenthesis x right parenthesis equals 145 plus 40 x. (the quantity x was measured in millions of tons and the price and total cost were measured in millions of dollars.) determine the level of production and the corresponding price that maximize the profits.