Simplify the complex fraction.
A. 
B. 
C. 18y(y + 5)
D. 
Answer: D
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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 = 1; local maximum at x =-1; concave down on (0, ?); concave up on (-?, 0) B. Local maximum at x = 1; local minimum at x =-1; concave up on (-?, ?) C. Local minimum at x = 1; local maximum at x =-1; concave up on (0, ?); concave down on (-?, 0) D. Local maximum at x = 1; local minimum at x =-1; concave up on (0, ?); concave down on (-?, 0)
Perform the indicated operation(s). Simplify if possible.
- 
A. 
B. 
C. 
D. 
Use the order of operations agreement to simplify the given expression.
2 ? 
A. 
B. 
C. 
D. - 
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.?
A. Nonreal complex B. Real, complex C. Complex D. Complex, pure imaginary, nonreal complex