Write the quotient in the standard form.
A. 1 + 
i
B. 
i
C. 1 + 
i
D. 
i
Answer: B
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Factor completely.64x2 - 81
A. (8x + 9)(8x - 9) B. (8x + 9)2 C. (8x - 9)2 D. (64x + 1)(x - 81)
Solve the problem.The rate of return of certain investments increases as the risk factor of the investment increases. An investment with a risk factor of 2 has a rate of return of 5.0%. An investment with a risk factor of 24 has a rate of return of 12.0%. What is the average rate of return per unit of risk?
A. 1.90% per unit risk B. 0.32% per unit risk C. 0.53% per unit risk D. 3.14% per unit risk
Find the vertex, focus, and directrix of the parabola with the given equation.y2 - 6y + 12x + 81 = 0
A. vertex: (3, 6) focus: (3, 3) directrix: y = 9 B. vertex: (3, 6) focus: (3, 9) directrix: y = 3 C. vertex: (-6, 3) focus: (-9, 3) directrix: x = -3 D. vertex: (-6, 3) focus: (-3, 3) directrix: x = -9
Find an equation for the hyperbola described. Graph the equation.Center at (0, 0); vertex at (0, 2); focus at (0, -2
)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1