Answer:
(-4,4)
Step-by-step explanation:
The answer is the second choice I believe
For a problem 1 the answer is 3×6+6×9.
for a problem 3 the answer is 9×10+8×7
for problem 4 the answer is 4×8+8×4+8×4.
The answer to this question would be 3d-2=31 and d=11
