USING STRUCTURE In Exercises 27-30, describe the transformation of the graph of the parent quadratic
function. Then identify the vertex.
27. f(x) = 3(x + 2)2 + 1
28. f(x) = -4(x + 1)2 - 5
29. f(x) = -2x2 + 5
30. f(x) = (x - 1)2