Ineed ! which of the following represents a valid probability distribution?

Probability distribution B

Step-by-step explanation:

Probabilities cannot be negative numbers.  This means we can exclude distributions A and C.

Probability can be a maximum of 1.0.  This means we can eliminate distribution D.  

This leaves distribution B.

We can double check by finding the sum of the distribution.  The sum of a probability distribution is 1.0.  Adding these probabilities together, we have

0+0.45+0.16+0.39 = 1.00

B is correct.

The answer is the second option, just took the test.

answer is B

it is x=-4

step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,