Simplify the expression.
A. - 
B. - 
C. 
D. - 
Answer: A
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Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set. x + y + z = 92x - 3y + 4z = 7
A. Cramer's rule does not apply since D = 0; 
B. Cramer's rule does not apply since D = 0; ?
C. Cramer's rule does not apply since D = 0; 
D. Cramer's rule does not apply since D = 0; 
A quality control inspector must visit franchises in Atlanta, Boston, Chicago, Dallas, and Minneapolis every month. The inspector lives in Chicago and would like to find the most efficient route (in terms of distances). Driving distances are shown. What is the most efficient route? ? A B C D M A - 1115 717 692 1131 B 1115 - 1012 1845 1619 C 717 1012 - 937 420 D 692 1845 937 - 963 M 1131 1619 420 963 -? __________ mi.
Fill in the blank(s) with the appropriate word(s).
Add. Use a number line only as a check.12 + (-43)
A. 31 B. -55 C. 55 D. -31
Solve the problem.You have 88 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.
A. length: 44 ft, width: 44 ft B. length: 44 ft, width: 22 ft C. length: 66 ft, width: 22 ft D. length: 22 ft, width: 22 ft