Be clear please

1.) Production, Inputs, and Cost: Building Blocks for Supply Analysis The firm can generally substitute one input for another. Whether or not it pays to substitute depends on the relative costs of labor and machinery. First, describe the alternative types of input proportions available to the firm. Then, describe the combination of inputs that represent the least costly way for the firm to produce its goods. Lastly, give one example of the firm's substitutability from a recent news article. 2.) Production, Inputs, and Cost: Building Blocks for Supply Analysis Total profit is the net earnings of the firm during a period of time. Marginal profit is the addition to total profit resulting from one more unit of output. Total revenue is the total amount of money the firm receives from the consumers of its goods, without any deduction of costs. Marginal revenue is the addition to total revenue resulting from the addition of one unit to output. First, expand on these descriptions to completely describe their impact on the firm. Then, describe fixed cost and the profit-maximizing price. Lastly, give one example of the profit-maximizing firm from a recent news article