Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the x-y plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the x-y plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the x-y plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the x-y plane; range: real numbers z ? 0; level curves: parabolas 
Answer: B
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Write the numbers in order from smallest to largest.0.7144, 0.71
, 0.71444, 0.714
A. 0.71
, 0.714, 0.7144, 0.71444
B. 0.714, 0.71
, 0.7144, 0.71444
C. 0.71
, 0.71444, 0.7144, 0.714
D. 0.714, 0.7144, 0.71444, 0.71
Use a radical to write f(x).f(x) = x4/5
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Find z1z2. Express the answer in standard form.z1 = 3
z2 = 5
A. -15i B. 15 C. 15i D. -15
Rationalize the denominator.
A. 
B. 
C. 
D. 