Miss Jordan and Miss Marie's class has 12 marbles in their jar. Miss Alex's class has 8 marbles in their jar. Which class has the bigger amount of marbles?

irrational, cannot

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,