3 and 81/100 is the mixed number form of 3.81.
Answer:
There is no value of a/b because the system has infinitely many solutions.
Step-by-step explanation:
We know that there is no solution because, when we solve for x and y, we get x = 12 and y = -6. This means that there are infinitely many solutions because we can plug in any value for a and b and still get a correct answer.
The correct answer is D because you would multiply the numbers in the bracket by 6 which would equal to 30