if you can i do need help with all three shown below. mostly confused on what formulas i would use to find the missing part. thank you very much :)

If Cost of Goods Sold is $303,000, ending inventory is $45,000, and purchases were $343,000 (assume all on account), what is beginning inventory? A) $80,000 B) $308,000 C) $40,000 D) $5000 If beginning inventory is $113,000, ending inventory is $198,000, and purchases were $397,000 (assume all on account), what is Cost of Goods Sold? A) $86,000 B) $312,000 C) $1000 D) $482,000 On December 31 st, Datton, Inc. has cost of goods sold of $540,000, ending inventory is $100,000, beginning inventory is $128,000; and average accounts payable is $102,000. What is the accounts payable turnover? (Round your answer two decimal places.) A) 8.53 B) 3.06 C) 5.57 D) 5.02