Perform the indicated operation.Evaluate 
.
A. 0.01234568
B. 81
C. 243
D. 27
Answer: B
Mathematics
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Solve the problem.For the function 
at the point 
, find the unit vector for which f is increasing most rapidly.
A. 
i + 
j
B. 
i + 
j
C. 
i + 
j
D. 
i + 
j
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Compute r, the linear coefficient of correlation, for the given data.
A. 0 B. 0.005 C. -0.006 D. 0.006
Mathematics
Expand the expression.log8 xy
A. log4 x + log4 y B. log8 x - log8 y C. log8 x + log8 y D. log4 x - log4 y
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Solve the problem.An auto repair shop charged a customer $532 to repair a car. The bill listed $92 for parts and the remainder for labor. If the cost of labor is $55 per hour, how many hours of labor did it take to repair the car?
A. 7 hr B. 9 hr C. 8.5 hr D. 8 hr
Mathematics