Help out please I need a tutor​

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

Need this asap if anyone can i would be very grateful. if you could show workings that would really

The continuous random variable x is uniformly distributed over the interval [–1,3]. find -e(x) -var(x) -e(x²) -p(x < 1.4) a total of 40 observations of x are made.