I NEED HELP PLZ don’t answer just for points. ONLY do that if someone already helped me

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

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)