If you use 40 linear feet of 12-foot wide carpet to carpet this room, will you have any waste carpet after the installation?
a) yes, 56 sq. ft
b) yes, 40 sq. ft.
c) yes, 24 sq. ft. d)
no, the 12 ft carpet fits exactly

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)