Find the vertex, focus, and directrix of the parabola. Graph the equation.(x + 3)2 = (y - 3)
A. vertex: (3, -3)
focus: (3, -2.75)
directrix: y = -3.25
B. vertex: (-3, 3)
focus: (-2.75, 3)
directrix: x = -3.25
C. vertex: (3, -3)
focus: (3.25, -3)
directrix: x = 2.75
D. vertex: (-3, 3)
focus: (-3, 3.25)
directrix: y = 2.75
Answer: D
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Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.a2 = 18, a4 = 2
A. a1 = 2, r = 3 B. a1 = 54, r = 0.33 C. a1 = 6, r = 3 D. a1 = 162, r = 0.33
Perform the indicated operation.
+ 
A. 
B. 
C. 
D. 
The perimeter of a rectangle is 
m, and its area is 
. Find its dimensions.
A. 
B. 
C. 
D. 
E. 
Write the number in words.248,680,020
A. two hundred forty-eight million, six hundred eighty thousand, twenty B. two hundred forty-eight million, sixty-eight thousand, twenty C. two hundred forty-eight million, six hundred eighty thousand, two hundred D. two hundred forty-eight million, six hundred eighty thousand, two