Solve the equation.
+ 
= 
A. {2, 0}
B. {-2, 0}
C. {-1, 0}
D. {1, 0}
Answer: D
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Simplify, where possible.2a - 2b + 6c - 2(5a + 6b - 9c)
A. -3a + 4b - 3c B. -8a + 10b - 12c C. -8a - 8b + 15c D. -8a - 14b + 24c
Solve the problem.You have 108 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: 54 ft, width: 27 ft B. length: 27 ft, width: 27 ft C. length: 81 ft, width: 27 ft D. length: 54 ft, width: 54 ft
Solve the problem.Two tracking stations are on the equator 124 miles apart. A weather balloon is located on a bearing of 
from the western station and on a bearing of 
from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
A. 293 mi B. 356 mi C. 347 mi D. 284 mi
Solve the problem.Roberto's subtotal at Scramble's Electronics is 
The sales tax on these items is 
What was Roberto's total bill?
A. $17.52 B. $16.52 C. $17.62 D. $16.62