Perform the indicated operations and simplify.Let A = 
, B = 
, and C = 
. Find C(A - B).
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response.Graph f(x) = cos-1 x together with its first derivative. Comment on the behavior of f and the shape of its graph in relation to the signs and values of f'. 
What will be an ideal response?
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = 2x + 4, [0, 2], left-hand endpoint
A. 
B. 
C. 
D. 
Provide an appropriate response.Use the augmented matrix to solve the system: 0.4x1 + 0.9x2 = - 4.9 x1 - 0.3x2 = 0.5
A. (-0.1, -0.5) B. (-5, -1) C. (0, 0) D. (-1, -5)
Use the figure to solve the inequality.f(x) < 0
A. {x|-5 ? x ? 2}; [-5, 2] B. {x|x < -5 or x > 2}; (-?, -5) or (2, ?) C. {x|-5 < x < 2}; (-5, 2) D. {x|x ? -5 or x ? 2}; (-?, -5] or [2, ?)