Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 4x + 6y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c > 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0 ; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Answer: D
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A. Obtuse B. Acute C. Right D. Straight
Solve the problem.A large square with side length 5 circumscribes a circle, while a smaller square inscribes the same circle. If a point on the figure is chosen at random, what is the probability that the point lies in the shaded area?
A. 
B. 
C. 
D. 
Solve for the missing numbers. Markup is based on cost. Round dollar amounts to the nearest cent.
? % S $ 8.35
A. 
141% S $ 8.35
B. 
169% S $ 8.35
C. 
31% S $ 8.35
D. 
159% S $ 8.35
Solve the equation for the indicated variable.L = 
for W
A. W = AL
B. W = A + L
C. W = 
D. W = 