Which expression shows this number in expanded form?
A)
B)
C)
D)

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)

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b