Use your grapher to determine which of the graphs matches the given polar equation.r = 4 sin ?
A. 
B. 
C. 
D. 
Answer: D
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If the equation represents a hyperbola, find the center, foci, and asymptotes. If the equation represents an ellipse, find the center, vertices, and foci. If the equation represents a circle, find the center and radius. If the equation represents a parabola, find the focus and directrix. 4x2 + 9y2 + 72x - 36y + 324 = 0
A. C: (-9, 2); V: (-9, 5), (-9, -1); F: (-9, 4.2), (-9, -0.2) B. C: (-9, 2); V: (-6, 2), (-12, 2); F: (-6.8, 2), (-11.2, 2) C. C: (-9, 2); V: (-7, 2), (-11, 2); F: (-5.4, 2), (-12.6, 2) D. C: (-9,2); V: (-9, 4), (-9, 0); F: (-9, 5.6), (-9, -1.6)
tan 37°
A. 0.80 B. 0.75 C. -0.84 D. 0.60
Compare the graph of the given quadratic function f with the graph of y = x2.f(x) = -5x2
A. Narrower B. Reflected across the x-axis and wider C. Wider D. Reflected across the x-axis and narrower
Factor.r2 + 12r + 36
A. (r - 6)2 B. (r + 6)(r - 6) C. (r + 6)2 D. (r + 12)(r - 12)