Write an inequality involving the variable x that describes the set of numbers graphed.
A. x ? -7
B. x ? -7
C. x < -7
D. x > -7
Answer: C
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Write the mixed number as an improper fraction.7
A. 
B. 
C. 
D. 
When a skydiver jumps from an airplane, his downward velocity V, in feet per second, t seconds into the fall is given by
.
A: Make a graph of V versus t over the first 20 seconds of the fall.B: The terminal velocity of the skydiver is 181 feet per second. What is 90% of terminal velocity?C: When does the skydiver reach 90% of terminal velocity?
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Round your answer to two decimal places if necessary.
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What will be an ideal response?
Find the vertex, focus, and directrix of the parabola with the given equation.y2 - 12y + 12x + 108 = 0
A. vertex: (6, 6) focus: (6, 9) directrix: y = 3 B. vertex: (-6, 6) focus: (-9, 6) directrix: x = -3 C. vertex: (6, 6) focus: (6, 3) directrix: y = 9 D. vertex: (-6, 6) focus: (-3, 6) directrix: x = -9
Match the numerical model to the corresponding model.
A. y = 6x-4 B. y = 5x-1 C. y = 3x+5 D. y = 7x-7