Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Answer: C
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 9x2 - 4y2
A. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: ellipses 
C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: hyperbolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: hyperbolas 
Find the polar coordinates of the point(s) of intersection of the given curves for 0 ? ? < 2?.r = 7, r = 7 + sin ?
A. (0, 0), (7, 0), (7, ?) B. (0, 0), (0, 7), (?, 7) C. (0, 7), (?, 7) D. (7, 0), (7, ?)
Use a proportion to solve the problem. Round to the nearest tenth as needed.A building casts a shadow 18 m long. At the same time, the shadow cast by a 44-cm tall pole is 95 cm long. Find the height of the building.
A. 37.4 m B. 6.8 m C. 8.3 m D. 38.9 m
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.logb (yz5)
A. logb y + 5 logb z B. 5 logb yz C. 5 logb y + 5 logb z D. logb y + logb5z