Sammy needs sutures to close a cut on his leg. Polyester fiber thread sutures come pre-packaged as 30 inch length units. How many whole suture packages would need to be opened to be able to close a wound that requires 100 cm worth of thread sutures

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)