Simplify.
- 
A. 
B. 
C. 
D. 
Answer: B
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Multiply.11ax7(-6ax7 + 12x5)
A. -66a2x14 + 132x12 B. -66ax + 132x C. -66a2x14 + 132ax12 D. -66a2x14 + 12x5
Divide.
A. x2 + 5 + 
B. x2 + 5x + 2
C. x2 + 5x + 
D. x2 + 5
Solve.A company has 63,000 employees. Of these, 
drive alone to work, 
car pool, 
use public transportation, 
cycle, and the remainder use other methods of transportation. How many employees use each method of transportation?
A. Drive alone: 2,100; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
B. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
C. Drive alone: 21,100; car pool: 10,500; public transportation: 8,900; cycle: 7,000; other: 1000
D. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
Simplify the expression.
A. sin y B. -sin y C. csc y D. cos y