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 except (0, 0); range: real numbers > 0; level curves: ellipses 
B. Domain: all points in the x-y plane; range: real numbers > 0; level curves: ellipses 
C. Domain: all points in the x-y plane; range: all real numbers; level curves: ellipses 
D. Domain: all points in the x-y plane except (0, 0); range: all real numbers; level curves: ellipses 
Answer: A
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Sketch the surface z = f(x,y).f(x, y) = 1 - x - 2y
A. 
B. 
C. 
D. 
Solve the problem.Suppose f(x) = 31.2 + 1.3 log(x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is the salinity in grams of salt per kilogram of seawater (expressed as parts per thousand or ppt). Approximate the salinity, to the nearest hundredth, when the depth is 346 meters.
A. 77.96 ppt B. 80.56 ppt C. -27.90 ppt D. 34.50 ppt
In the series resonant circuit below, Vin = 8.0 V and R = 10 Kê. Find VO
a. 3.3 V
b. 4.0 V
c. 5.6 V
d. 6.6 V
e. 8.0 V
Simplify.
2 + 
A. 
B. 
C. 
D. 