Select the graph of the function, and use the Horizontal Line Test to determine whether the function is one-to-one and so has an inverse function.
?
?
?
A. 
The function has an inverse.
B. ?
The function has an inverse.
C. ?
The function has an inverse.
D. ?
The function has an inverse.
E. ?
The function has an inverse.
Answer: A
Mathematics
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Find the surface area of the surface S.S is the paraboloid x2 + y2 - z = 0 between the planes z = 
and z = 6.
A. 
?
B. 
?
C. 39?
D. 
?
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Multiply and simplify. Assume that all variables represent non-negative numbers.2
(
+ 
)
A. 10
+ 10
B. 2
+ 5
C. 2
+ 5
D. 2
+ 10
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Graph the linear equation.x - 8y = 7
A. 
B. 
C. 
D. 
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Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.6x - 7y = 494x + 2y = -14
A. {(0, -7)} B. Cramer's rule does not apply since D = 0; ? C. {(-1, -6)} D. {(0, -6)}
Mathematics