Simplify the expression given below.
(732 - 83 + 21) + (-1363 - 11.2 + 133 + 19)

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)

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

Percent increase and decrease. original number: 45 new number: 18