Sarah knows how important it is to budget het monthly expenses. she earns $3,120 rvery month and her monthly expenses total to $2,130. sarah has summaried her monthly expenses using the pue chart. determine how much money sarah spends on her monthly rent.

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)