Kevin is trying to find a brown sock in his drawer. he has 16 white socks, 4 brown socks, and 6 black socks. what is the probability that he pulls out either a black or white sock, puts it back and then pulls out a brown sock? a) 12 13 b) 22 169 c) 30 169 d)

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas