Find each product.(5r - 3)(5r + 3)

A. 25r2 - 9
B. 25 + 30r - 9r2
C. 25r2 - 30r - 9r2
D. 5r2 - 9

Answer: A

Mathematics

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Find f-1(x) for the following one-to-one function f.f(x) = 3x3 + 6

A. f-1(x) =   - 6 
B. f-1(x) = 
C. f-1(x) = , x ? 6
D. f-1(x) = 

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A. 16x B. 4x C. x + 16 D. 4x + 4

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Find the quotient. Write the answer in standard form.

A.  - i
B.  - i
C.  + i
D.  - i

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Graph.25y2 - 36x2 = 900

A.

B.

C.

D.

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