(10 points and brainliest for best) lyndi has started a home business making and selling all natural
goat milk soaps.

if the cost of the materials for a basic bar of soap is $2.50 and
lyndi sells each bar of soap for $4.50, what is the markup percent?

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)