Factor the expression completely. If the polynomial is prime, state this as your answer.9x2 - 1
A. (3x + 1)2
B. (3x - 1)(3x + 1)
C. prime
D. (3x - 1)2
Answer: B
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Use scientific notation to solve the problem.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is 2.5 × 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 2.0 × 10-30 bacteria B. 5.0 × 1031 bacteria C. 2.0 × 1030 bacteria D. 5.0 × 10-31 bacteria
Use the apportionment criterion to decide who should get an additional representative if another member is added to the total number of representatives.For the U.S. House of Representatives:State A: population 5.7 million, 10 representativesState B: population 11.4 million, 16 representatives
A. State A B. State B
Perform the indicated operation and write the answer in lowest terms. 
+ 
+ 
A. 
B. 
C. 
D. 
Write the conjugate 
of the complex number z. Then find z
.z = 5 + 6i
A. 
= 5 - 6i, z
= -11
B. 
= 5 - 6i, z
= 25 - 36i
C. 
= 5 - 6i, z
= 61
D. 
= 5 - 6i, z
= 25 - 36i2