Hi, can you help me answer this problem quickly please

Sandra is a bus driver who also raises turkey for supplemental income. She is trying to decide what to feed her turkeys. She is considering using a combination of turkey feeds available from local suppliers. She would like to feed the turkeys at minimum cost while also making sure each turkey receives a daily adequate supply of calories and vitamins. Sandra has formulated the following Linear Programming (LP) model: Let XI= pounds of Feed Type 1 in diet X2= pounds of Feed Type 2 in diet Minimize Z=$0.3X1+$0.5X2 (Cost) subject to (1) 800X1+1,000X28,000 (requirement of calories per day) (2) 140X1+70X2700 (requirement of units of vitamins) (3) XI(1/3)(XI+X2) (constraint 3) (4) X10,X20. (a) Constraint 3 was added since Feed Type 1 contains an ingredient that is toxic if consumed in too large a quantity. In managerial terms (i.e., verbally explain) what does constraint 3 mean? (2 points) (b) Briefly explain or define the 140 units in the vitamins constraint. (2 points) (c) Graph the constraint lines and mark them clearly with the numbers (1), (2) and (3) to indicate which line corresponds to which constraint. Darken the feasible region. (12 points) You can NOT use a software that automatically does the plotting: you are NOT allowed to use DESMOS or any similar tool. Plotting using Excel, a paint tool or hand plotting is OK. If you wish to use a "graph paper" to assist you with plotting, one is provided below (check page 4). (d) Using the graphical method, how many pounds of feed Type 1 and feed Type 2 that Sandra should give each turkey? What is the optimal cost? Provide all necessary steps/calculations to justify your answers. ( 10 points)