1) Giannini Incorporated, which produces and sells a single product, has provided the following contribution format income statement for March: Required: Redo the company's contribution format income statement assuming that the company sells 5,200 units. 2) Mechem Corporation produces and sells a single product. In April, the company sold 2,000 units. Its total sales were $163,000, its total variable expenses were $80,900, and its total fixed expenses were $57,800. Required: a. Construct the company's contribution format income statement for April. (Do not round intermediate calculations.) b. Redo the company's contribution format income statement assuming that the company sells 1,900 units. (Do not round intermediate calculations.) 3) Certosimo Corporation has provided the following contribution format income statement. All questions concern situations that are within the relevant range. Required: a. If sales increase to 7,040 units, what would be the estimated increase in net operating income? b. If sales decline to 6,900 units, what would be the estimated net operating income