The quotient of two and a number, subtracted from seventeen

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

What is the value of x? enter your answer in the box. (cm)

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