Use the discriminant to decide whether the equation represents a parabola, an ellipse, or a hyperbola.8y2 + 8x + 6y + 10 = 0
A. Hyperbola
B. Parabola
C. Ellipse
Answer: B
Mathematics
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The line graph shows the pollution rate for a certain lake over six decades. Use the graph to answer the question. 
Find an estimate for the pollution rate of the lake at the beginning of decade 6.
A. 1.5% B. 3% C. 1% D. 2.5%
Mathematics
Solve the problem.A signal is made by placing 3 flags, one above the other, on a flag pole. If there are 7 different flags available, how many possible signals can be flown?
A. 343 B. 35 C. 210 D. 21
Mathematics
Solve using the substitution method. Use a graphing calculator to check your answer. 7x + 6y = 66x + 9y = 36
A. (-12, 16) B. (-6, 8) C. (6, 8) D. No solution
Mathematics
The graph of 
is given in the figure. State whether 
or 
A. a < 0 B. a > 0
Mathematics