Use the formula a=bh , where a is the area, b is the base length, and h is the height of the parallelogram, to solve this problem. mr. bill orders a parallelogram-shaped window for one of the rooms in the house he is building. the window has an area of 1440 square inches. the height of the window is 32 inches.

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)