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. 2.0 × 10-30 bacteria
B. 5.0 × 10-31 bacteria
C. 2.0 × 1030 bacteria
D. 5.0 × 1031 bacteria
Answer: C
Mathematics
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Solve. y2 + 2y = 15
A. -3, -5 B. 5, -3 C. 3, 5 D. 3, -5
Mathematics
Find the domain of the function.f(x) = 9x - 9
A. {x|x ? 9} B. all real numbers C. {x|x ? 0} D. {x|x > 0}
Mathematics
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.log x + log(x2 - 144) - log 7 - log(x - 12)
A. log 
B. log 
C. log 
D. log 
Mathematics
Provide the proper response.How many real number cube roots does any positive number have?
Fill in the blank(s) with the appropriate word(s).
Mathematics