Draw a Venn diagram to determine whether the argument is valid.Premise: No surfers speak French.Premise: Pierre speaks French.Conclusion: Pierre is not a surfer.
What will be an ideal response?
The X represents Pierre. The conclusion follows necessarily from the premises, and the argument is valid.
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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; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer written materials in a school of 300 students?
A. About 9 students B. About 54 students C. About 108 students D. About 27 students
Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 8x + 4y + 7; 0 ? x ? 1, 1 ? y ? 3
A. 38 B. 26 C. 28 D. 36
Solve the equation.3x = 81
A. {4} B. {3} C. {5} D. {27}