What is pt. Pt=6x+2 and tq=8x-6

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?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?