According to euclidian geometry a plane contains at least___ points that

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Which of the following is the graph of y= square root -x-3