Which expression is equivalent to 3/4x -1/4xy

Name these type of angles shown check all that applies

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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)