Please show me all the steps and the formula used preferably typed please, Thank you very much

Use the following information to answer the next 5 questions: A simplified income statement for Lowe's Company: Sales Cost of Goods Sold (GOGS) Gross Profit Operating Expenses Operating Income Income Statement $26,491 $18,465 $8,026 $5,667 $2,359 Key fact: Purchases are approximating 100% of COGS Selected Balance Sheet Items (As of 1/31/2016) Selected Balance Sheet Items Merchandise Inventory $3,968 Cash $2,428 Accounts Receivable (AR) $2,763 Equipment $6,950 Total Assets $16,109 All numbers are expressed in 1,000,000 1. What is the current profit margin? Choose the closest answer. A 10% B 20% 30% D 40% 2. If we could achieve a 3% reduction in COGS, what is the impact on Merchandise Inventory? A Costs associated with inventory will be reduced by 3% B Costs associated with inventory will be reduced by 6% C There is no impact on cost of inventory 2. If we could achieve a 3% reduction in COGS, what is the impact on Merchandise Inventory? A Costs associated with inventory will be reduced by 3% B Costs associated with inventory will be reduced by 6% C There is no impact on cost of inventory 3. If we could achieve a 3% reduction in COGS, what is the impact on total assets? A It will go up B It will go down C It will have no impact on total assets 4. If we could achieve a 3% reduction in COGS, what is the new profit margin? Choose the closest answer. A3% B 6% C 9% D 12% 5. If we could achieve a 3% reduction in COGS, what is the new ROA? Choose the closest answer. A3% B 6% 9% 12% 18% D E