Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Answer: A
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (-2x - 10y)5
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
Solve the problem.A cylindrical tin can (closed at both ends) has a surface area of 34 in3. Sketch the volume of the can as a function of its radius.
A. 
B. 
C. 
D. 
Perform the indicated subtraction.-7 - (-7)
A. 1 B. 14 C. -14 D. 0
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 60,000 B. 0.06 C. 0.00001667 D. 0.0006