Perform the operation and write the result in the standard form.(12 + 7i) - (3 + 2i)
A. 9 + 5i
B. 15 + 9i
C. -15 - 9i
D. 15 - 5i
Answer: A
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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = 
A. L = ln 2, N = 6 B. L = ln 4, N = 8 C. L = 0, N = 8 D. diverges
Find the equation in standard form of the parabola described.The focus has coordinates (5, 0), and the vertex has coordinates (0, 0).
A. x2 = 20y B. y2 = 5x C. x2 = 5y D. y2 = 20x
Write an equation of the line.
A. y = 3x - 
B. y = - 
x + 3
C. y = 
x + 3
D. y = - 5x + 3
Provide an appropriate response.Identify the variable and the constant in this expression: 
A. variable 3x; constant 10x3 B. variable x; constant 15 C. variable x; constant 3x D. variable 15; constant x