The length of a rectangle is four times its width. if the perimeter is at most 130 centimeters, what is the greatest possible value for the width? write an inequality to model the problem.. a.2w + 2 • (4w) < 130. b.2w + 2 • (4w) > 130. c. 2w + 2 • (4w) ≤ 130. d.2w + 2 • (4w) ≥ 130

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)