Use the following to answer questions 3035 Find the missing amounts: 30. $ For case 1 , determine cost of goods sold 31. For case 1, determine operating income (include ".." if needed) 32. $ For case 2, determine gross profit 33. For case 2, determine operating income (include "." if needed) 34. $ For case 3, determine net sales 35. $ For case 3, determine operating expense