Find the product.3(7x)

A. 10x
B. 10
C. 21
D. 21x

Answer: D

Mathematics

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Simplify the expression.

A. 3z - 5 B. 3z - 40 C. 3z + 5 D. 24z - 5

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Sketch the surface z = f(x,y).f(x, y) = - 

A.

B.

C.

D.

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List the critical values of the related function. Then solve the inequality. > 0

A. ; 
B. - ; 
C. - ; 
D. 0; (0, ?)

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Rationalize the denominator.

A.
B.
C.
D.

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