Help pls me on the math question

30 determine the coefficient on x 12 y 24 x12y24 in ( x 3 + 2 x y 2 + y + 3 ) 18 . (x3+2xy2+y+3)18. (be careful, as x x and y y now appear in multiple terms! )

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Find the slope of the line passing through a pair of points