If the function is one-to-one, find its inverse. If not, write "not one-to-one."f(x) = 
A. f-1(x) = x3 + 2
B. f-1(x) = 
- 2
C. f-1(x) = (x + 2)3
D. f-1(x) = (x - 2)3
Answer: A
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Describe the inverse operation of the action being done to the variable.6x
A. multiplication by 6 B. subtraction of 6 C. addition of 6 D. division by 6
Solve the system.y = 12
- 36y = x2
A. 
B. 
C. 
D. 
Middletown is designing a new high-speed rail system to connect Downtown, the Airport, and the Mall. The elevated tracks for the rail system will run along the existing roads, that run on a grid as shown below. In addition, a central switching station must be located at one of the intersections.
What is the length of the optimal network?
A. 7 blocks
B. 8 blocks
C. 5 + 
blocks
D. 9 blocks
E. none of these
The graph of the following curve is given. Find the area that it encloses.
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