A point is randomly selected on the surface of a lake that has a maximum depth of 150 feet. Let y be the depth of the lake at the randomly chosen point. (a) What are possible values of y? all positive integers from 0 to 150 all positive integers from 1 to 150 all real numbers from 1 to 150 all real numbers from 0 to 150 (b) Is y discrete or continuous? discrete continuous