Find a cofunction with the same value as the given expression.sin 20°
A. cot 70°
B. tan 70°
C. cos 20°
D. cos 70°
Answer: D
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Solve the equations.x2 = 144
A. ±13 B. ±12 C. 12 D. 72
Provide an appropriate response.Which one of the following does not define y as a function of x?
A. 
B. y = 6x + 1
C. {(3, -3), (6, -9), (9, 7)}
Find and simplify the difference quotient of f, 
, for the function.f(x) = 3x + 3
A. 3 + 
B. 3 + 
C. 3
D. 0
Provide an appropriate response.Which one of the following is a description of the graph of the solution set for the system below?x2 + y2 ? 364x2 + 9y2 ? 36
A. The area outside the circle (defined by the first equation), including the border. B. The area inside the ellipse (defined by the second equation), including the border. C. The area outside the ellipse (defined by the second equation), including the border. D. None of these