Use a graph to approximate the solutions to the equation within 0.1. 7x2 + 5 = -12x
A. -0.4, -0.5
B. -0.7, -1
C. -1.6, -1.9
D. 0.3, -2.1
Answer: B
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Name the conic or limiting form represented by the given equation.3x2 + 42x + 7y2 - 28y + 147 = -28
A. Hyperbola B. Point C. Ellipse D. Empty set
Find the expression.u = 
Find 
A. 
B. 97
C. 
D. 
Simplify the rational expression. If the expression is already in simplest form, state this as your answer.
A. 
B. 
C. 
D. 
Solve the problem.Sales of new digital cameras were researched in a particular U.S. market for a range of years. Let s be the sales of new digital cameras (in thousands) for the year that is t years since 1995. A quadratic model for the sales is 
What year is represented by the vertex of this model? What is the best interpretation of the model for points to the left of the vertex?
A. 1998; Sales are greater for earlier years. B. 1999; The model breaks down. C. 1999; Sales are greater for earlier years. D. 1998; The model breaks down.