Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 + 8x - 65 = 0
A. (x - 4)2 + y2 = 81
center (4, 0), r = 9
B. x2 + (y + 4)2 = 81
center (0, -4), r = 9
C. (x + 4)2 + y2 = 81
center (4, 0), r = 9
D. (x + 4)2 + y2 = 81
center (-4, 0), r = 9
Answer: D
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Find the slope of the polar curve at the indicated point.r = -5 + 3 sin ?, ? = 0
A. 
B. - 
C. 
D. - 
Use the leading-term test to match the function with the correct graph.f(x) = -0.4x7 + 0.13x6 - 0.26x5 + x4 + x3 - 3x - 5
A. 
B. 
C. 
D. 
Find the particular solution to the given differential equation that satisfies the given conditions.D2y - 4 Dy + 8y = 0; y = 0 when x = 0 and y = e?/2 when x = 
A. y = ex sin 2x B. y = e2x(c1 sin 2x + c2 cos 2x) C. y = e2x sin 2x D. y = e2x cos 2x
Write the number in words.40,255,005
A. forty million, two hundred fifty-five thousand, five B. forty million, two hundred fifty-five thousand, fifty C. four million, two hundred fifty-five thousand, five D. four million, two hundred fifty-five thousand, fifty