Simon is tracing the path of a lizard on a wall. The table below gives the relationship between the lizard's height from the ground, y, in feet, and the horizontal distance, x, in feet, of the lizard from the starting point. Distance (feet), x 1 2 3 4 3 Height (feet), y 5 6 7 8 9 Which of the following describes the table? A. neither a function nor a relation B. both a relation and a function C. a function only D. a relation only

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)