Find the Expected Value and Variance for the Random Variable $f ( x ) = 2 ( x - 1 )$

Short Answer

Find the expected value and variance for the random variable whose probability density function is $f ( x ) = 2 ( x - 1 )$ 1 ≤ x ≤ 2.
Enter just two reduced fractions (unlabeled) in the order E(X), Var(X) separated by a comma.