Express 8.15 as a mixed number.

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

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)

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2