Solve the system of equations using substitution.
A. x = 6, y = 3; x = 3, y = 6
or (6, 3), (3, 6)
B. x = 10, y = 2; x = 2, y =10
or (10, 2), (2, 10)
C. x = 5, y = 4; x = 4, y = 5
or (5, 4), (4, 5)
D. x = 20, y = 1; x = 1, y = 20
or (20, 1), (1, 20)
Answer: C
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Give a verbal description of the subset of real numbers represented by the following inequality, and sketch the subset on the real number line. ? ?-3 ? x < 0 ?
A. ?-3 ? x < 0 denotes the set of all real numbers greater than or equal to -3 and less than or equal to 0.
B. ?-3 ? x < 0 denotes the set of all real numbers greater than or equal to -3 and less than 0.
C. ?-3 ? x < 0 denotes the set of all real numbers greater than or equal to -3 and less than 0.
D. ?-3 ? x < 0 denotes the set of all real numbers greater than or equal to -3 and less than 0.
E. ?-3 ? x < 0 denotes the set of all real numbers less than or equal to -3 and greater than 0.
Insert the symbol < or > between the pair of numbers.3 
-9
A. < B. >
Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round to four decimal places.log0.218
A. 0.5563 B. -0.5568 C. -1.7959 D. 1.9542
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercept: (0, 0) , y-intercept: (0, 0) ;
B. x-intercept: (0, 0) , y-intercept: (0, 0) ;
C. x-intercept: (0, 0) , y-intercept: (0, 0) ;
D. x-intercept: (0, 0) , y-intercept: (0, 0) ;