R\&R Tax Service offers tax and consulting services to individuals and small businesses. Data for fees and costs of three types of tax returns follow. R\&R provides services in the ratio of 4:4:2 (easy, moderate, business). Fixed costs total $18,000 for the tax season. (2) Determine the varlable costs per composite unit. \begin{tabular}{|l|l|l|l|l|l|} \hline \multicolumn{2}{|l|}{ (4) Datermine the number of units of each product that will be sold at the broak-even point. } \\ \hline & Number per composite unit & Number of composite units to break even. & \multirow{2}{*}{ Units sales at the break-even point } \\ \hline & Easy (form 1040EZ) & & & \\ \hline & Moderate (form 1040) & & & \\ \hline & Business & & & \\ \hline & & & \\ \hline \end{tabular}