please show excel formulas

A manulacturer's contribution margin income statement for the year follows. Prepare contribution margin . income statements for each of the three separate cases below. 13. 1. The 10,000 units produced and sold increases to 10,400 units and fixed 14 costs increase by $5,000. 15 (Use cells A5 to F13 from the given information ta complete this question.) \begin{tabular}{|c|c|} \hline Units & Incresseinfuredcosts \\ \hline 10,400 & $5,000 \\ \hline \end{tabular} needed. increase by 8%. Hint: A unit increase has both a sales and costs impact. (Use cells AS to F25 from the given information to complete this question.) \begin{tabular}{|r|c|} \hline Decreaseinsellingprice & Increaseinuntesproducedandsold \\ \hline 5% & 8% \\ \hline \end{tabular} 3. Fored costs increase by $20,000, variable costs per unit decrease by $2, and units produced and sold increase by 500 . 38 (Use cells A5 to F37 from the given information to complete this question.)