Find the exact value of the expression.
A. 
B. 
C. 
D. 2
Answer: A
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Find the vertex, focus, and directrix of the parabola. Graph the equation.y2 = -16x
A. vertex: (0, 0)
focus: (0, -4)
directrix: y = 4
B. vertex: (0, 0)
focus: (-4, 0)
directrix: x = 4
C. vertex: (0, 0)
focus: (4, 0)
directrix: x = -4
D. vertex: (0, 0)
focus: (0, -4)
directrix: y = 4
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 
Perform the indicated operation. Write the result in standard form.
3
A. 64
B. 512
C. -4 + 4i
D. 64 + 12i