Find the vertices and graph the hyperbola.49y2 - 9x2 = 441
A. (0, -7), (0, 7)
B. (-7, 0), (7, 0)
C. (-3, 0), (3, 0)
D. (0, -3), (0, 3)
Answer: D
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Find the vertex for the parabola whose equation is given.y = x2 + 9x
A. (0, -9)
B. (- 
, - 
)
C. (0, 0)
D. (-9, -81)
A child has an enormous jar in which she has been saving all of her spare change. In order to determine exactly how much money she has in the jar, she dumps all of the coins on the floor and counts them. Under the watchful eye of her mother, she counts 180 pennies, 120 nickels, 100 dimes, and 80 quarters.The data collection method used in this example is called
A. a census. B. a controlled study. C. a survey. D. random sampling. E. none of these
Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.The boy is 1.9 
tall.
A. km B. m C. cm D. mm
State which trigonometric functions are undefined for the given value. Refer to the unit circle below.
-?
A. Cosecant and tangent B. Cosecant and cotangent C. Secant and tangent D. Secant and cotangent