Units per Ounce Food A Food B 30 10 Food C 20 A dietitian in a hospital is to arrange a special diet composed of three basic foods. The diet is to include exactly 220 units of calcium, 180 units of iron, and 300 units of vitamin A. The number of units per ounce of each special ingredient for each of the foods is indicated in the table. Construct a mathematical model to complete parts (A) through (C) below. Use Gauss-Jordan elimination to solve the model and then interpret the solution. (Type whole numbers.) Calcium Iron Vitamin A 10 20 10 30 10 10 (C) How is the diet in part (A) affected if the vitamin A requirement is dropped? Select the correct choice below, and, if necessary, fill in the answer boxes to complete your choice O A. There is still one solution. The diet requires ounces of food A ounces of food B, and ounces of food C (Type whole numbers) B. There are multiple solutions. If the diet uses t ounces of food C, it should use ounces of food A and ounces of food B, where t is an integer satisfying ts0 OC. There are no solutions. There is no combination of foods that will meet the diet requirements exactly 1)) Grace needs $1799 to purchase a Macbook Pro Laptop Computer. The store lends her the money at 7% Simple interest for a years. a) how much interest will she pay ? show your work b) Grace decides to Pay. the total amount (Principle + intrest) in 24 equal monthly Payments. How much is each Payment? 02) Maria deposited $2500 into an account earning simple interest. a) how much must maria make in interest to triple her original investment? b) what interest rate would be required in order for her. to make that amount of interest in lo years