Find the indicated matrix.Let A = 
. Find 3A.
A. 
B. 
C. 
D. 
Answer: A
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Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 
B. x = 4, x = -4
C. x = 4
D. x = 16
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Functionz = 5x + 6yConstraintsx ? 0 0 ? y ? 5 2x + 3y ? 12 2x + 3y ? 20
A. maximum: 30; at (6, 0) B. maximum: 50; at (10, 0) C. maximum: 40; at (2, 5) D. maximum: -20; at (4, 0)
Determine if the ordered pair is a solution to the system of linear inequalities in two variables.
; (1, -3))
A. Yes B. No
Solve the inequality, giving its solution set in both interval and graph forms.
< 5 
A. (-?, -10)
B. (-?, -10]
C. (-10, ?)
D. [-10, ?)
