Just do 3^2 * 3^2 he is incorrect because he multiplied the exponents and he was suppose to add them together. the correct answer should be 3 to the 4th power which is 81
3 is to 2 is the probability of drawing 4 marbles that are all blue.
By using distributive property we get
5(2)+5(7)
Therefore you answer is D. 5(2)+5(7)
