Find the focus and directrix of the parabola with the given equation.x2 = -4y
A. Focus: (0, 1), directrix: y = -1
B. Focus: (1, 0), directrix: x = -1
C. Focus: (-1, 0), directrix: x = 1
D. Focus: (0, -1), directrix: y = 1
Answer: D
Mathematics
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A. - 
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Find the area represented by the definite integral.
A. 12 B. 45 C. 90 D. 36
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Use the Table of Integrals to evaluate the integral.
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Solve the problem using the quadratic formula.The length of a rectangle is 6 cm greater than the width. The area is 
Find the length and the width.
A. 19 cm, 25 cm
B. 
cm, 
cm
C. 17 cm, 23 cm
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