Which of these is a factor in this expression? 624 - 4+9 (y + 3)
A. 624 – 4
O B. 9 (73 + 3)
O c. (y² + 3)
O D. -4+9 (y2 + 3)

(9x-5) - (x+12) what’s the answer and also explain how to do it i need it for a test tomorrow

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?