(10 points) zelie planned for a square pool to have a side length of 28 ft but found that it needs to be 14 ft long to fit in her backyard. she found the change of scale below. which is zelie’s error? zelie should have divided both numbers by 14. zelie should have written the ratio as 28/7. zelie should have written the ratio as 14/8. zelie should have subtracted 14 from both numbers.

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)