1.) in a litter of 7 kittens each kitten weighs less than 3.5 ounces find all of the possible values of the combined weights of the kittens
2.) to cover a rectangular region of her yard penny needs atleast 170.5 square feet of sod the length of the region is 15.5 feet what are the possible widths of the region

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)