I need help with these questions

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

Diverging mirrors and lenses always produce images