Simplify.
A. 
B. 
C. 
D. 
Answer: B
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Answer the question.The distance from the Earth to the Sun is about 1.5 × 108 km, while the distance from the Earth to the moon is about 3.8 × 105 km. If a scale model of the solar system is constructed so that the distance from the Earth to the Sun is 100 meters, what will be the distance from the Earth to the moon?
A. 6.36 m B. 39, 474 m C. 0.25 m D. 39.5 m
Solve.Amy teaches Chinese lessons for $95 per student for a 6-week session. From one group of students, she collects $3800. Find how many students are in the group.
A. 42 students B. 44 students C. 40 students D. 30 students
Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = -i + 3j, w = 6i - 6j
A. 75.6° B. 63.4° C. 2.8° D. 153.4°
Solve.(2m - 1)2 = 81
A. 4, -5 B. 10, -8 C. No real solution D. 5, -4