Let P = 
, X = 
, and T = 
, where all the elements are real numbers. Use these matrices to determine whether the statement is true or false for 2 × 2 matrices.PX is a 4 × 4 matrix.
A. True
B. False
Answer: B
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Solve the problem.A company knows that the unit cost C and the unit revenue R from the production and sale of x units are related by 
Find the rate of change of unit revenue when the unit cost is changing by 
and the unit revenue is $2,000.
A. $729.75/unit B. $150.00/unit C. $660.00/unit D. $799.50/unit
Express the limit as a definite integral.
?xk; [3, 11]
A. 
B. 
C. 
D. 
Solve the rational inequality. Express the solution using interval notation.
> 0
A. (-?, -4) ? (1, ?) B. (-4, 1) C. (-?, -4) D. (1, ?)
Find the absolute extreme values of the function on the interval.g(x) = -x2 + 11x - 24, 3 ? x ? 8
A. absolute maximum is 
at x = 
; absolute minimum is 0 at 8 and 0 at x = 3
B. absolute maximum is 
at x = 
; absolute minimum is 0 at 8 and 0 at x = 3
C. absolute maximum is 
at x = 
; absolute minimum is 0 at 8 and 0 at x = 3
D. absolute maximum is 
at x = 
; absolute minimum is 0 at 8 and 0 at x = 3