(C) 12
(D) 13
(E) 20
26 .
(A) 1.5
(B) 2.25
(C) 8.9
(D) 23.1
(E) 56.12
27 . X and Y are independent events. If the probability event X will occur is
0.2 and the probability event Y will occur is 0.9, what is the probability
both X and Y will occur?
(A) 18%
(B) 20%
(C) 50%
(D) 72%
(E) 90%28 . If x^2 − 4x −12 = 0, what is the sum of the two possible values of x?
(A) −8