Which of the following is the vertex of y = (x − 3)² + 4?
Solve x² − 5x + 6 = 0. Show your factoring.
x = 2 or x = 3. Full credit for (x − 2)(x − 3) = 0; half credit for correct roots without factoring.
A ball is thrown so its height is h(t) = −16t² + 32t + 5. When does it reach its maximum height, and what is that height? Explain your reasoning.
2 pts finds t = 1 s (vertex). 2 pts finds h = 21 ft. 2 pts explains using vertex form or −b/2a.