Evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Answer: D
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List the degree of each term and the degree of the polynomial.x8yz - x10y2 - 2x7y2z3
A. 8, 12, 12; polynomial: 12 B. 8, 12, 12; polynomial: 8 C. 10, 12, 12; polynomial: 12 D. 10, 12, 12; polynomial: 10
Solve the problem.In a sample of 70 widgets, 7 were defective. How many defective widgets would you expect in a sample of 210 widgets?
A. 21 widgets B. 24 widgets C. 19 widgets D. 48 widgets
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 xy-plane except y = 0; range: all real numbers; level curves: parabolas 
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
D. Domain: all points in the xy-plane except y = 0; range: real numbers z ? 0 ; level curves: parabolas 
Solve the equation by making an appropriate substitution.x4 - 20x2 + 64 = 0
A. {4, 16} B. {-2, 2, -4, 4} C. {-2i, 2i, -4i, 4i} D. {2, 4}