Country Name Short Program Free Program Canada Patrick Chan 97.52 178.10
Spain Javier Fernandez 86.98 166.94
Japan Yuzuru Hanyu 101.45 178.64
Japan Tatsuki Machida 83.48 169.94
Kazakhstan Denis Ten 84.06 171.04

For one of the planned elements of Patrick Chan's free program, the judges awarded hlm 1.9 times the base score of the element. If they awarded him 3.80 points, what was the base score of the element?

=points

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)