The volumes of two spheres are 729 in3 and 27 in3.
what is the ratio of their radii, rounded to the nearest whole number?
a.
1: 4
c.
3: 1
b.
2: 7
d.
3: 4

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)