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. 
Mathematics
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