0.864 turn it into fraction HELPPP!

Which facts are true for the graph of the function below? check all that apply. f(x) = log8 x. (30 points pls )

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?