please show the solution step by step

QUESTION 7 [Quiz] (Goldilocks Mining 1) Goldilocks needs at least 12 lbs of gold and at least 18 lbs of silver to pay the rent. There are two mines in which she can find gold and silver. Each day that Goldilocks spends in mine 1, she finds 3 lbs of gold and 1 lbs of silver. Each day that Goldilocks spends in mine 2. she finds 4 lb of gold and 2 lb of silver. min X1 + X2 s.t. aX 1 + 6X2 2 12 (1) Gold CX1 + X2 > 18 (2) Silver X . X1 X2 20 0 In the LP above, the LHS coefficients are O A. a -2, b = 1, C = 4, d = 3 OB. a 3. b = 4, C = 1. d = 2 OC. a = 1, b = 2, C=3, d = 4 Da = 1, b = 3, C2, d = 4 QUESTION 8 [Quiz] (LP4) Consider the LP maximization problem below. max X + 4 Y s.t. X 18 (2) Silver X . X1 X2 20 0 In the LP above, the LHS coefficients are O A. a -2, b = 1, C = 4, d = 3 OB. a 3. b = 4, C = 1. d = 2 OC. a = 1, b = 2, C=3, d = 4 Da = 1, b = 3, C2, d = 4 QUESTION 8 [Quiz] (LP4) Consider the LP maximization problem below. max X + 4 Y s.t. X