Find the equation of the curve described by the given information.Parabola: vertex 
, directrix: 
A. 
2 = -4
B. 
2 = -4
C. 
2 = 4
D. 
2 = 4
Answer: C
Mathematics
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Find the derivative.y = 
+ 
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
+ 
Mathematics
Find an equation for the circle.Center at (4, -6), radius of length 
A. (x - 4)2 + (y + 6)2 = 
B. (x + 4)2 + (y - 6)2 = 
C. (x - 4)2 + (y - 6)2 = 
D. (x + 4)2 - (y + 6)2 = 16
Mathematics
Name the quadrant in which the angle ? lies.tan ? < 0, sin ? < 0
A. I B. II C. III D. IV
Mathematics
Subtract. Write a mixed numeral for the answer.
A. 15
B. 16
C. 15
D. 15
Mathematics