Solve the problem.A circle of radius r is inscribed in a square with sides 2r as shown in the figure. Express the total of the shaded areas in terms of r and ? as a completely factored polynomial.
A. r2(2 + ?)(2 - ?)
B. ?2(4 - r)
C. r2(4 - ?)
D. r(2-?)2
Answer: C
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Rewrite the expression as the logarithm of a single quantity.3logbq - logbr
A. logb
B. logb
C. logbq3÷ logbr
D. logb(q3 - r)
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. Assume that no radicands were formed by raising negative quantities to even powers.5 
+ 5 
A. 30 
B. 6 
C. 30x
D. 5 
Subtract.
A. 2,631 B. 2,633 C. 2,571 D. 10,633