Identify the indicated submatrix.A = 
. Find A21.
A. 
B. 
C. 
D. 
Answer: B
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Use the data to construct a frequency distribution.The following data represent the total number of years of formal education for 40 employees of a bank.
Construct a frequency distribution, letting each class have a width of one.
A. 
B. 
C. 
D. 
Solve and give interval notation for the solution set. Then graph the solution set.5x < 20 or x + 2 ? 9
A. (-?, 7]
B. (-?, 4) ? [7, ?)
C. (4, ?)
D. (-?, -7] ? (4, ?)
Write an equation in x that models the conditions. Do not solve the equation.63% of 88 is what number (x)?
A. 0.63 = 88x B. 0.63 x= 88 C. 0.63 + 88 = x D. 0.63 ? 88 = x
Find all points where the function has any relative extrema or saddle points and identify the type of relative extremum.x2 - y2 + 5xy
A. Relative minimum at (0, 0) B. Relative maximum at (0, 0) C. Saddle point at (0, 0) D. There are no relative extrema.