Solve the system using Gaussian elimination. If (x, y, z) is the solution to the system, give the value of 
.
?
?
A. -12
B. -6
C. 48
D. 12
E. -54
Answer: A
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Solve the problem.Crafty Bill's Cool Car Sales opened as a used car sales lot in 2006. The graph shows the number of cars sold as a function of time. What is the approximate number of cars sold in 2008? 
A. 400 cars B. 350 cars C. 500 cars D. 550 cars
A vector v has initial point P and terminal point Q. Graph 
and write 
as 
P = (3, -5), Q = (-2, 7)
A. 
B. 
C. 
D. 
Solve.A baker can decorate the day's cookie supply four times as fast as his new assistant. If they decorate all the cookies working together in 24 minutes, how long would it take for each of them to decorate the cookies working individually?
A. baker: 120 min
assistant: 480 min
B. baker: 120 min
assistant: 30 min
C. baker: 7
min
assistant: 29 min
D. baker: 30 min
assistant: 120 min
Simplify. 
A. 
B. 
C. 
D. 