How do i graph the inequality x-2< -2x-2

Find the domain of the following expression: 1/(√x)-2

Find the area of the unshaded square

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.