Solve and check.
+ 
= 
A. x = 8
B. x = -4
C. x = 
D. x = -8
Answer: D
Mathematics
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x2 = y
A. (0, -10); y = 10 B. (-20, 0); x = 10 C. (0, 10); y = -10 D. (0, -10); y = -10
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Find the base.0.4 is 20% of what number?
A. 0.08 B. 0.8 C. 0.5 D. 2
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Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
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Graph the function and its inverse using the same set of axes. Use any method.f(x) = log5 x; f-1(x) = 5x
A. 
B. 
C. 
D. 
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