1. Use a graphing calculator to graph y = 8x – 2x2. Estimate the highest point on the graph. A. (8, 2) B. (7, 3) C. (2, 8) D. (3, 7) Hint 2. How could you use the graph of h = 20t – 6t2 to estimate the solution(s) of 20t – 6t2 = 7, where h stands for height and t stands for time? A. Draw a horizontal line at h = 7 and find where it intersects the curve. B. Draw a vertical line at t = 7 and find where it intersects the curve. C. Draw a vertical line at t = 20 and find where it intersects the curve. D. Draw a horizontal line at h = 20 and find where it intersects the curve. Hint 3. How many solutions can a graph of y = ax2 + bx + c have? A. two B. one C. zero D. all answers are correct Hint 4. Use you calculator's Table feature to approximate the solutions to the nearest hundredth.4x(x + 2) = 12 A. x = 0, x = –4 B. x = –1, x = –4 C. x = 1, x = –3 D. x = 2, x = –2 Hint 5. Toby needs to create a rectangular pen for his dog. He decides that the area of the pen will be 100 square feet with its length 2 feet longer than its width. What are the dimensions of Toby's pen approximated to the nearest hundredth? A. length 10.32 ft width 8.32 ft B. length 10.00 ft width 10.00 ft C. length 11.05 ft width 9.05 ft D. length 10.58 ft width 8.58 ft Hint