Answer:
I think it is 84 hope this helps
Ok well, first of all, you must do 12 x 2 because if Mike has twice as many of red marbles, (12 red) then you must multiply that by 2. So 12 x 2 is 24! Then Mike has 3 times as many of yellow marbles, so you do 24 x 3, which is 72! So the answer is A, Sandy is correct. Hope this helps! :)
Well it would be C! so 78-74=4 so they are counting by 4's and 86+4=90 :33
2 (n π - i tanh^(-1)(sqrt(2/3))) should be the answer
That is taking the cubed root of a number so the cubed root of 8 would be 2 because 2x2x2 is 8