Given the following information, find the contribution rate. (6 points) (Show your work for full credit - just answer will only get less than half or no points at all. Use two decimals. Please mark a) and b) on your answer.) a) Sales price per unit, $17.50; variable cost per unit, $6.95 b) Sales price per unit, $16.50; profit, $33,381.80; number of customers, 18,440; total fixed costs, $136,137