What is the total cost of three shirts with a 15% discount that cost 1 shirt cost $9,000 to shirts cost $11.99 and two shirts cost $21

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

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)

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.