The sum of first n terms of an ap is 3n^2+2n find the common difference

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?