Determine whether the graph of the equation is a circle, parabola, ellipse, or hyperbola. Do not graph.x2 + y2 - 4x - 16y + 64 = 0
A. parabola
B. ellipse
C. hyperbola
D. circle
Answer: D
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Determine the maximum number of turning points of f.f(x) = -x2(x + 4)3(x2 - 1)
A. 7 B. 6 C. 2 D. 5
Solve the problem.A survey revealed that 50% of people are entertained by reading books, 33% are entertained by watching TV, and 17% are entertained by both books and TV. What is the probability that a person will be entertained by either books or TV? Express the answer as a percentage.
A. 17% B. 83% C. 66% D. 100%
Find parametric equations (not unique) for the circle (give an interval for the parameter values) and find a description in terms of x and y.a circle centered at (4, 3) with radius 2, generated counterclockwise
A. x = 4 + sin t, y = 3 + cos t, for 
< t < 
; x2 + y2 = 2
B. x = t - 4, (y - 3)2 + t2 = 4, for 0 < t < 2?; x2 + y2 = 2
C. x = 4 + 2 cos t, y = 3 + 2 sin t, for 0 < t < 2?; x2 + y2 = 2
D. x = 3 + 2 sin t, y = 4 + 2 cos t, for 
< t < 
; x2 + y2 = 2
Following the order of operations, evaluate by working from left to right.-6 ÷ (7) ? (-42)
A. -36
B. - 
C. 
D. 36