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.
?
g(x) = |x + 5| - |x - 5|
?
A. ?
The function does not have inverse.
B. ?
The function does not have inverse.
C. ?
The function does not have inverse.
D. ?
The function does not have inverse.
E.
The function does not have inverse.
Answer: E
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0) B. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (-?, -3) and (3, ?); concave down on (-3, 3) D. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (-?, -3) and (3, ?); concave up on (-3, 3)
Decide whether or not the radical expression represents a real number.- 
A. No B. Yes
Translate the phrase to an algebraic expression. Use "x" to represent "a number". The quotient of 1
and a number
A. 1
? x
B. x ÷ 1
C. 1
- x
D. 1
÷ x
Solve the problem.Chuck and Dana agree to meet in Gainesville for the weekend. Chuck travels 165 miles in the same time that Dana travels 147 miles. If Chuck's rate of travel is 6 mph more than Dana's, and they travel the same length of time, at what speed does Chuck travel?
A. 55 mph B. 57 mph C. 49 mph D. 53 mph