Find an equation of a parabola satisfying the given conditions.Focus at (-5, 8), directrix x = -3
A. (x + 8)2 = -4(y + 4)
B. (y + 8)2 = -4(x + 4)
C. (x - 8)2 = -4(y + 4)
D. (y - 8)2 = -4(x + 4)
Answer: D
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Find the volume of the solid generated by revolving the shaded region about the given axis.About the x-axis
A. 8?2 B. 8?2 - 16? C. 8?2 + 16? D. 8?2 - 4?
Solve the rational equation.
- 
= 
A. 
B. {-16}
C. {-4}
D. {16}
Solve the formula for the specified variable.a + b = s + r for s
A. s = 
B. s = 
+ b
C. s = r(a + b)
D. s = a + b - r
Solve the problem.Consider the following simplified digital photograph that has a 3 × 3 grid with four gray levels numbered from 0 to 3. It shows a letter Y in white on a black background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix B for which B - A represents the negative image of the picture represented by A.
A. 
B. 
C. 
D. 