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

A.
B. 13
C.
D. 13

Answer: C

Mathematics

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Multiply. ? 

A.
B. 7x4
C. x4
D.

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Determine whether the function is one-to-one. If so, find a formula for the inverse.g(x) = 

A. g-1(x) = 
B. g-1(x) = 
C. g-1(x) = 
D. Not a one-to-one function

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Solve the inequality, then graph the solution.-10x ? 20

A. (-?, 2]

B. [-2, ?)

C. (-?, -2]

D. [2, ?)

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Use a proportion to solve the problem.If 7 sandwich rolls cost $1.82, how much will 25 rolls cost?

A. $12.74 B. $6.50 C. $7.50 D. $14.74

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