need help!

Sampler Company sells two products, Sigma and Zeta, with a sales mix of 50% for each product. Sigma has a contribution margin per unit of $26, and Zeta has a contribution margin per unit of $21. The company sold 700 total units in September. Calculate the total amount each produot contributed to the coverage of fixed costs and the total contribution margin for the company. Select the formula labels and calculate the contribution margin for Sigma and Zeta, then calculate the total contribution margin for the company