Graph the function.y = 3 tan
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) = 
A. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
C. Domain: all points in the xy-plane except y = 0; range: real numbers z ? 0 ; level curves: parabolas 
D. Domain: all points in the xy-plane except y = 0; range: all real numbers; level curves: parabolas 
Use a calculator with a 
key or a 
key to solve the problem.The exponential function f(x) = 47.36(1.027)x describes the population of a certain country, y, in millions, in year x. a) Substitute 0 for x and, without using a calculator, find the country's population in year 0. b) Find the country's population in year 27 as predicted by this function.
A. a) 1 million; b) 102.554 million B. a) 47.36 million; b) 97.233 million C. a) 47.36 million; b) 99.858 million D. a) 1.027 million; b) 94.677 million
Solve the problem.The width of a rectangle can be represented by the ratio 
, where A is the area of the rectangle and l is the length. Suppose that the area of a rectangle is 
square inches and the length of the rectangle is 
a. Determine the simplified rational expression that describes the width of the rectangle.b. What is the width of the rectangle if 
/> inches? A. a. (x - 3); b. 37 inches B. a. (x + 3); b. 43 inches C. a. (x + 5); b. 45 inches D. a. (x - 5); b. 35 inches
Use the figure to find the specified vector.Find -a.
A. 
B. 
C. 
D. 