Will give brainliest!! (8th grade)

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

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

I’m stuck on this equation, anyone got the answer?