Perform the matrix operation.Let A =
and B = 
. Find 3A + B.
A. 
B. 
C. 
D. 
Answer: D
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Use scientific notation to solve the problem.Assume that the volume of the earth is 5 x 1014 cubic meters and the volume of a bacterium is 2.5 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 x 10-31 bacteria B. 5.0 x 1031 bacteria C. 2.0 x 1030 bacteria D. 2.0 x 10-30 bacteria
Write the integer that corresponds to the situation.371 feet below sea level
A. 371 B. -371
Solve the problem.Wanda bought 2 items at Lucky Pete's market. She bought a pound of butter for 
and a gallon of milk for 
What was the total amount that she paid for both of these items?
A. $4.74 B. $4.64 C. $3.74 D. $3.64
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 2
- 3
B. 2
+ 6
C. 2
- 6
D. 