Can anyone please help me answer this question? I’ve been stuck on it forever. I already tried 49 since a lot of people were telling me that, but it’s still showing incorrect. Please help :(

Which of the following expressions is equal to 2x^2+8

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)

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)