Emily is using glass to make a display case in the shape of a triangular prism. The net of the display case is shown. 10 ft
8 ft
10 ft
8 ft
5 ft i
10 ft
18 ft
Exactly how much glass is needed to make the display case?
B. 104 ft2
O A 82 112
OC 120 ft2
OE 180 112
OD. 168 ft2

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)