Solve using the substitution method. Use a graphing calculator to check your answer. 2x + 3y = 155x + 8y = 42
A. (-12, 18)
B. (-6, 9)
C. (6, 9)
D. No solution
Answer: B
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Solve the problem using the idea of labeling.How many permutations are there of the letters in the word TENNESSEE?
A. 7560 B. 81 C. 362,880 D. 3780
Subtract.
A. 636 B. 536 C. 632 D. 720
Solve.The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 
for a resistor whose resistance is 
and when the current flowing through the resistor is 
find the voltage across a resistor whose resistance is 
and when the
current flowing through the resistor is 
A. 12 volts
B. 36 volts
C. 27 volts
D. 18 volts
Find the domain of the function.f(x) = 
+ 
A. (-?, -6) or (-6, 3) or (3, ?) B. (-?, ?) C. (-?, -6) or (3, ?) D. (-?, -3) or (-3, 6) or (6, ?)