Indicate whether the graph of the equation is a parabola, circle, ellipse, or hyperbola.x2 = 36 - 4y2
A. ellipse
B. circle
C. hyperbola
D. parabola
Answer: A
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Solve the problem.Elaine had 41 buttons and her grandmother donated 5 cards of buttons to the collection. Elaine sorted the buttons into 9 piles, putting 9 buttons in each pile. How many buttons were on each card from Elaine's grandmother?
A. 8 buttons B. 76 buttons C. 39 buttons D. 73 buttons
Show that the function is a solution of the wave equation.w(x, t) = cos (6ct) sin (6x)
A. Yes B. No
Solve.The cost C of double-dipped chocolate pretzel O's varies directly with the number of pounds of pretzels purchased, P. If the cost is 
when 7.9 pounds are purchased, find a linear function that relates the cost C to the number of pounds of pretzels purchased P. Then find the cost C when 4.7 pounds are purchased.
A. C(P) = 
; $136.18
B. C(P) = 0.098P; $0.46
C. C(P) = 17.238P; $136.18
D. C(P) = 10.256P; $48.20
Evaluate the expression using the given values.
; M = 230, m = 3
, d = 
A. 53973
B. 1840
C. 4906
D. 5397