Last saturday maria walked her dog 1 2/5 miles. natalia walked her dog 5 times as far. how many miles did natalie walk her dog

If you answer right ill give brainliest, : )

Me find the value of x each figure.

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)