Abag has 4 red marbles, 12 blue marbles and 6 yellow marbles. what is the probability of picking a yellow marble, replacing it, and then picking a blue marble?
a) 1/18
b) 18/121
c) 15/22
d) 22/131

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

Find the difference (8ab+a+2) - (3ab+6)