Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Perform the indicated operation.2x2(-3x3 - 5x2 + 9x - 7)
A. -12x2 B. -6x5 - 5x2 + 9x - 7 C. -6x6 - 10x4 + 18x2 - 14x2 D. -6x5 - 10x4 + 18x3 - 14x2
Mathematics
Solve the problem.The following table shows the number of housing starts in a beachside community in various years. Let f(t) be the number of housing starts at t years since 2009. Use a graphing calculator to draw a scatterplot. Find and verify an equation of f.
A. f(t) = 2.679t2 + 26.607t + 168.571 B. f(t) = -2.679t2 + 26.607t - 168.571 C. f(t) = -2.679t2 - 26.607t + 168.571 D. f(t) = -2.679t2 + 26.607t + 168.571
Mathematics
Perform the operations.11 + (4 ? 9) - 28
A. -4 B. -285 C. 19 D. 107
Mathematics
Solve the equation using the quadratic formula.4x2 + 1 = 3x
A. 
B. 
C. 
D. 
Mathematics