Solve the system of equations by the substitution method.
A. (1, 0)
B. no solution
C. (0, 1)
D. infinite number of solutions
Answer: A
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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The lines 
, 
, and 
A. 
B. 
C. 
D. 
Find the vertices, foci, and asymptotes for the hyperbola. Graph the hyperbola.
- 
= 1
A. Vertices at (-2, 0) and (2, 0);
Foci at (- 2
, 0) and (2
, 0);
Asymptotes: y = - 
x and y = 
x
B. Vertices at (0, -10) and (0, 10);
Foci at (0, - 2
) and (0, 2
);
Asymptotes: y = - 
x and y = 
x
C. Vertices at (-10, 0) and (10, 0);
Foci at (- 2
, 0) and (2
, 0);
Asymptotes: y = - 
x and y = 
x
D. Vertices at (0, -2) and (0, 2);
Foci at (0, - 2
) and (0, 2
);
Asymptotes: y = - 
x and y = 
x
Use a calculator and the change-of-base formula to find the logarithm to four decimal places.log7 0.562
A. 12.4555 B. -0.2503 C. -3.3768 D. -0.2961
Find the product and simplify. Assume all variables represent nonnegative real numbers.
? 
A. 60
B. 30
C. 72
D. 30