Answer this question please and thank you.

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

Ihave trouble finding the nth term of a linear sequence

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?