Which of the graphs below represent represent functions?(zoom in if needed)

This circle is centered at the origin, and the length of its radius is 6. what is the circle's equation? a. x^2+y^2=36 b x^2+y^2=6 c x+y=36 d x^6+y^6=1

Find the measure of the angle indicated in bold

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)