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

A. -2x6y6
B. 2x4y4
C. -2x4y4
D. 4x4y4


Answer: C

Mathematics

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Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 3 units to the left. This graph is then vertically shrunk by a factor of  and reflected across the x-axis. Finally, the graph is shifted 7 units downward.

A. y = - (x + 3)2 - 7
B. y = (x - 3)2 - 7
C. y = - (x - 3)2 - 7
D. y = - (x - 3)2 + 7

Mathematics

Use the graph of f to sketch a graph of the inverse of f using a dashed curve.

A.

B.

C.

D.

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Solve the equation algebraically. Verify your solution with a graphing utility.1 -  = 

A.
B.
C.
D.

Mathematics

Simplify.( + 4)( - 4)

A. 22
B. 2
C. 6 - 2
D. -10

Mathematics