Using ΔPTR below for the following questions, select the best answer from the choices provided.

If m∠UST = m∠PQU, which lines are parallel?

Select the best answer from the choices provided.

A. US || PR

B. RT || UQ

C. PU || RS

D. None of the lines are parallel.

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)