Find the equation in standard form of the parabola described.Focus at (-8, 0); Directrix the line x = 8
A. y2 = -32x
B. y2 = 32x
C. x2 = -32y
D. y2 = -8x
Answer: A
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Solve the problem.Find the vector from the origin to the center of mass of a thin triangular plate (uniform density) whose vertices are A(6, 1, 5), B(5, 3, 9), and C(2, 5, 9).
A. 
i - 2j - 
k
B. 
i - 1j - 
k
C. 
i + 3j + 
k
D. 
i - 3j - 
k
Provide an appropriate response.A metal bar is cut into six pieces each 3
inches long. Each cut wastes 
inch. Determine the length of the original bar.
Fill in the blank(s) with the appropriate word(s).
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(
+ 
)(
- 
)
A. 
+ 
- 
+ 13
B. 
+ 
- 
- 13
C. 
+ 
+ 
+ 13
D. 
+ 
+ 
- 13
Evaluate the algebraic expression for the given values of the variables.6a - 5b for a = 7 and b = 2
A. 40 B. 32 C. 52 D. 37