Perform the operation indicated. Simplify.
+ 
A. 3x + 9
B. 
C. 
D. 
Answer: C
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Graph the inequality.-2x - 4y ? 8
A. 
B. 
C. 
D. 
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 minimum at x = +1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = +1; local maximum at x = -1; concave up on (-?, ?) D. Local minimum at x = +1; local maximum at x = -1; concave down on (-?, ?)
I = 6 mAPK, E = 9 VPK, and f = 70 KHz. Use i as the reference. e leads i by 30. Find i after 10 æsec.
a. 3.0 mA b. 4.5 mA c. -5.7 mA d. -4.5 mA e. -3.9 mA
Graph the function over a one-period interval.y = 
cos 
+ 3
A. 
B. 
C. 
D. 