Write the number in scientific notation.420,000
A. 4.2 × 10-6
B. 4.2 × 105
C. 4.2 × 10-5
D. 4.2 × 106
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Evaluate the function.Find g(a - 1) when g(x) = 
x - 1.
A. 
a - 4
B. 
C. 
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D. 
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Solve the problem.Photography reprints cost $0.52 each at a local photo shop, or $0.44 each, plus $1.15 postage and handling, through the mail. How many reprints must a customer purchase to make it less expensive to use mail order?
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Mathematics