12. Write a new equation if f(x) = x2 is stretched vertically by a factor of 3 and reflected over the y - axis. NC 13. Find the inverse of f(x) = 2vx + 3 and state any domain restriction. NC 14. How can you tell if the inverse of a function is a function? NC 10 15. Graph f(x) = x3 - 2 and its inverse. NC N 10 8 6 5 8 -4 -6 -8 10 16. Determine whether each function is continuous at the given x-value. If discontinuous, state the type. C f ( x ) = x +1 if x