Find the direction angles of the vector. Round to the nearest degree, if necessary.v = -12i - 6j + 4k
A. ? = 149°, ? = 115°, ? = 73°
B. ? = 94°, ? = 92°, ? = 89°
C. ? = 161°, ? = 118°, ? = 72°
D. ? = 157°, ? = 117°, ? = 72°
Answer: A
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Solve. Give your answer as a mixed numeral.The floor of a rectangular room is to be tiled with 
foot square tiles along a 12
foot wall. How many tiles will be needed along the wall?
A. 36
tiles
B. 37
tiles
C. 39 tiles
D. 4
tiles
Solve the problem.The growth model f(t) = 
describes the population of a species of butterflies 
after they are introduced to a non-threatening habitat. How many butterflies are expected in the habitat after 14 months?
A. 5040 butterflies B. 1260 butterflies C. 360 butterflies D. 340 butterflies
Provide an appropriate response.The total cost of ending inventory in the specific identification method is equal to the number of units in ending inventory times the actual cost per unit.
A. True B. False
Factor completely. If the polynomial is prime, say so.12wx - 6wy - 2xz + yz
A. (6wz)(2x - y) B. (6w - z)(2x - y) C. (6w + z)(2x + y) D. (6 - z)(2wx - y)