Can someone please help me solve this

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

Which expression is rational? 6. , square root two, square root 14, square root 49

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?