Im studying mean, median, and mode and i've already tried to awenser this question but none of my awensers matched

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Write an equation for the function that includes the points (1,4/5) and (2,2/3)