NEED HELP If events A and B are independent, what must be true?
a. P(A|B) = P(B)
b. P(A|B) = P(A)
c. P(A) = P(B)
d. P(A|B) = P(B|A)

Step-by-step explanation:

P(A|B)=P(A)

conditioning on one does not effect the probability of the other as they are independent

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.