Chapter 4 - Quadratic Functions - 4.2 Graphing Quadratics in Vertex Form - 4.2 Exercises - Page 320: 51

Domain: All real numbers. Range: $[-4,\infty)$

Given $$ h(t) = (t-3)^2-4.$$ The parabola opens upward as we can see from the graph. Its vertex gives the minimum point. The domain and range are given by: Domain: All real numbers. Range: $[-4,\infty)$.