Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 - 12x + 8y + 36 = 0
A. (x - 6)2 + (y + 4)2 = 16
(h, k) = (6, -4), r = 4
B. (x - 6)2 + (y - 4)2 = 16
(h, k) = (6, 4), r = 4
C. (x + 6)2 + (y + 4)2 = 16
(h, k) = (-6, -4), r = 4
D. (x + 6)2 + (y - 4)2 = 16
(h, k) = (-6, 4), r = 4
Answer: A
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Solve the problem.How many seven-digit phone numbers are possible if the first four digits can be 1, 2, 3, or 4 and the other three digits can be any numeral 0-9?
A. 186,624 B. 256,000 C. 640,000 D. 25,600
Evaluate.9x, when x = 4
A. 13 B. 36 C. 162 D. 27
Write the equation of the line with the given slope and y-intercept. Write the equation in slope-intercept form.Slope = - 
; y-intercept is (0, 6)
A. y = - 
x - 6
B. y = 
x + 6
C. y = 
x - 6
D. y = - 
x + 6
Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°