In five years' time, Li Ting's father will be three times as old as Li Ting. Four years ago, her father was six times as old as her. Find their present ages.

What term makes it inconsistent y=2x - 4

Which of the following is true for the relation f(x)=2x^2+1

The center on a target has a diameter of 5 inches. the whole target has a diameter of 25 inches. complete the explanation for what part of the whole target is the center. the center of the target takes up % of the whole target.