Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is 
cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 × 10-31 bacteria
B. 2.0 × 10-30 bacteria
C. 5.0 × 1031 bacteria
D. 2.0 × 1030 bacteria
Answer: D
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Solve the polynomial inequality.2x5 < 14x3
A. (-?, -
) ? (0, 
)
B. (-7, 0) ? (0, 7)
C. (-
, 
)
D. (-?, -
) ? (
, ?)
Given matrix A, find the indicated minor.Find M21.A =
A. 27 B. -27 C. 33 D. -33
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The total income from the 5% and 6% investments is equal to the income from the 8% investment. Find the amount invested at each rate.
A. $5000 at 5%, $10,000 at 6%, $10,000 at 8% B. $10,000 at 5%, $10,000 at 6%, $5000 at 8% C. $10,000 at 5%, $5000 at 6%, $10,000 at 8% D. $8000 at 5%, $10,000 at 6%, $7000 at 8%
Convert the given unit of measure to the measure shown.76.43 grams to milligrams
A. 0.07643 milligram B. 0.007643 milligram C. 7,643 milligrams D. 76,430 milligrams