Answer:
the second one but I'm not sure it cuz it was a little bit different in my text I hope it
Which expression is equivalent to the given expression?
15(12-x)
A.

hope this help
The plot of the PDF shows the distribution is symmetric. This means that the mean is the same as the median, and that the 50% of the distribution lies to other side of this mean, i.e.

For this distribution,
.
Answer: The answer is the 3rd one