Perform the matrix operation.Given A = 
and B = 
, find AB.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Find sin 
, given that sin ? = - 
and ? terminates in 270° < ? <360°.
A. - 
B. - 
C. 
D. 
Use the graph of to determine the transformation that yields the graph of
a. Shift the graph of f nine units to the left. b. Shift the graph of f nine units upward. c. Shift the graph of f nine units to the right. d. Shift the graph of f nine units downward.
Solve the problem.S(x) = -x3 + 6x2 + 288x + 4000, 4 ? x ? 20 is an approximation to the number of salmon swimming upstream to spawn, where x represents the water temperature in degrees Celsius. Find the temperature that produces the maximum number of salmon. Round to the nearest tenth, if necessary.
A. 20°C B. 8°C C. 12°C D. 4°C
Subtract.
A. 10 B. -9 C. -10 D. 3 E. 9