Solve the system of equations by substitution.
A. x = 0, y = 0; (0, 10)
B. x = 0, y = 10; (0, 10)
C. x = 10, y = 10; (10, 10)
D. x = 10, y = 0; (10, 0)
Answer: C
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Sketch the graph and show all local extrema and inflection points.y = x + sin x, 0 ? x ? 2?
A. Local minimum: (0, 0)
Local maximum: (2?, 2?)
Inflection point: (?, ?)
B. Local minimum: (0, 0)
Local maximum: (2?, 2?)
No inflection points
C. Local minimum: (0, 0)
Local maximum: (2?, 2?)
Inflection point: (?, ?)
D. Local minimum: (0, 0)
Local maximum: (2?, 2?)
No inflection points
Perform the indicated operation.4
(
+ 
)
A. 4
+ 7
B. 4
+ 7
C. 4
+ 28
D. 28
+ 28
Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = 
, In = 
B. Im = 
,
In = 
C. Im = 
, In = 
D. Im = 
, In = 
Graph the parabola.x = (y + 5)2 
A. 
B. 
C. 
D. 