41 48 Functions with roots Determine the interval s on which the following functions are continuous At which finite endpoints of the intervals of continuity is f continuous from the left or continuous from the right 41 f x 5 x 43 f x 2x 16 45 f x x 2x 3 47 f x 2x 3 2 3 42 f x 25 x 44 f x x 3x 2 46 f t t 1 3 2 48 f z z 1 3 4