Sean solved a quadratic equation by factoring 9. Hannah The problem he solved is given. Complete the completi
four blanks shown for one of his steps and the solved is
solution
shown fo
x2 + 6x - 5 = 2
x2 + 8x
(x-2)(x+) = 0
x= []

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)