What is the sum of the first 10 terms of the geometric series −2+6+(−18)+54+ ? which is the correct formula for this problem?

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)

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Rewrite so the subject can be y in the formula d=m-y/y+n