Given the following three measures of sides in a triangle, determine if it is possible to construct a unique triangle, multiple triangles, or no triangle. Side Lengths: 5 inches, 8 inches, and 15 inches

No triangle

Multiple triangles

A unique triangle

The answer cannot be determined

HURR

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)