1. Calculate the number of days each account has been unpaid using the =DAYS function. \begin{tabular}{|l|r|r|r|r|} \hline \multicolumn{1}{c|}{ Customer } & \multicolumn{1}{c|}{ Amount } & \multicolumn{1}{c|}{ Invoice Date } & \multicolumn{1}{c|}{ Today's Date } & \multicolumn{1}{c|}{ Unpaid } \\ \hline Fitness Mania & $ & 2,500 & 6/17/2022 & 12/31/2022 \\ \hline Health for Life & 1,900 & 12/21/2022 & 12/31/2022 \\ \hline Holistic Health Options & 12,750 & 10/12/2022 & 12/31/2022 \\ \hline Image Reimaging & 7,000 & 12/5/2022 & 12/31/2022 \\ \hline Today's Gym World & 4,600 & 11/29/2022 & 12/31/2022 \\ \hline Whole Life Fitness Center & 15,900 & 11/20/2022 & 12/31/2022 \\ \hline Workouts Unlimited & 3,800 & 10/2/2022 & 12/31/2022 \\ \hline Total & $8,450 & & \\ \hline \end{tabular}