Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. how many square inches is the mirror? (round to nearest tenth) a) 956.5 in2 b) 1,104.5 in2 c) 1,365.5 in2 d) 1795.5 in2

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)