Simplify the expression. Assume that all variables are positive when they appear.

A. y6
B. y3
C.
D. y

Answer: B

Mathematics

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At what points is the given function continuous?f(x, y) = ex+y

A. All (x, y) in the first quadrant B. All (x, y) ? (0, 0) C. All (x, y) D. All (x, y) satisfying x + y ? 0

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Mathematics

Find a formula for the inverse of the function described below.A size-6 dress in Country C is size 44 in Country D. A function that converts dress sizes in Country C to those in Country D is 

A. f-1(x) =  + 16
B. f-1(x) = 
C. f-1(x) =  - 16
D. f-1(x) = x - 16

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Mathematics

Factor completely. If the polynomial cannot be factored, say it is prime.6x4 - 11x2 - 10

A. (3x - 2)(2x + 5) B. (2x2 - 5)(3x2 + 2) C. (6x2 - 5)(x2 + 2) D. (2x2 + 1)(3x2 - 10)

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Mathematics

Rationalize the denominator. Simplify, if possible.

A.
B.  
C.  
D.  

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Mathematics