Answer:
C is the answer.
Step-by-step explanation:
GF = GH so 30 = 2a - 4. First, you add 4 to both sides. Then, divide by 2 on both sides. From this, you should get a = 17.
FJ = HJ so 3b + 6 =24. To find b, subtract 6 from both sides and divide by three on both sides. This should give you b = 6.