Solve the problem.If 3-x = , what does 9x equal?

A. -25
B.
C. 25
D. 5

Answer: C

Mathematics

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Find the derivative. 

A.  + 
B.
C.  - 
D.

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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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Mathematics

Convert the improper fraction to a mixed number.

A. 6
B. 7
C. 5
D. 6

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Mathematics

Provide an appropriate response.Rearrange the formula to solve for the indicated letter:  x = , for b

Fill in the blank(s) with the appropriate word(s).

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Mathematics