A piecewise function is defined as shown. f(x) =1,x + 1 X > 1

What is the value of f(x) when x=3

-3
-2
1
4

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.