Is the below function correct? does it execute properly for all inputs? declare powa local powacc in powacc = fun {$ x n acc} if n==0 then acc else {powacc x n-1 x*acc} end end powa = fun {$ x n} {powacc x n 1} end end

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)

4+(2+x) can you me solve this problem

Select the correct answer from each drop-down menu the equation of a line is 3/5*+1/3y=1/15