Collect like terms.-8b + 4b
A. -4b
B. -12b
C. -4b2
D. 4b
Answer: A
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Determine whether the statement is true or false.Euler's formula n2 - n + 41 generates primes for n up to 46 and fails at n = 47.
A. True B. False
Use the pictograph to answer the question.This pictograph shows projected sales of compact disks (CDs) for a popular rock band for seven consecutive years. 
? = 1000 CDsApproximately how many fewer CDs will be sold in 2000 than in 2002?
A. 4000 CDs B. 6000 CDs C. 5000 CDs D. 4 CDs
Find the first six terms of the sequence.a1 = 8, a2 = 6; for n ? 3, an = an-1 - an-2
A. 8, 6, -2, -8, -6, 2 B. 8, 6, 2, -6, -2, 6 C. 8, 6, 4, 2, 0, -2 D. 8, 6, 14, 20, 31, 51
Write the expression as a sum and/or difference of logarithms. Express exponents as factors.log2 
A. 
log2 x + 3 log2 y
B. log2 
- log2 3y
C. 
log2 x - 3 log2 y
D. 
(log2 x - log2 y)