Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). In the figure, transversal t intersects the parallel lines a and b, and m angle1 is 64.76º.

m angle 4 is

m angle 6 is

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)