Solve the linear system by using an inverse matrix.
A. {(-6, 4, 12)}
B. {(6, 1, 4)}
C. {(6, 4, 1)}
D. ?
Answer: C
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Use the Concavity Theorem to determine where the given function is concave up and where it is concave down. Also find all inflection points.G(x) = 
x4 - x3 + 14
A. Concave up for (2, ?), concave down on (-?, 2); inflection point (2, 10) B. Concave up for (-?, 0), concave down for (0, ?); inflection point (0, 14) C. Concave up on (-?, 0) ? (2, ?), concave down on (0, 2); inflection points (0, 14) and (2, 10) D. Concave up on (0, 2), concave down on (-?, 0) ? (2, ?); inflection points (0, 14) and (2, 10)
Use the range rule of thumb to approximate the standard deviation.A distribution of data has a maximum value of 81, a median value of 49, and a minimum of 17. Round results to the nearest tenth.
A. 12.8 B. 16.0 C. 8.5 D. 32.0
Graph the function.f(x) = |5x|
A. 
B. 
C. 
D. 
Determine where the function is concave upward.
?
?
A. 
B. 
C. 
D. 