Find the equation in standard form of the parabola described.Vertex at (0, 0); Directrix the line y = 20
A. y2 = -80x
B. x2 = -80y
C. y2 = -20x
D. x2 = 80y
Answer: B
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Perform the indicated operation and express the answer in decimal notation.
A. 0.00000025 B. 250,000 C. -0.00000025 D. -250,000
Simplify the expression.
A. 
B. x + 2
C. x - 6
D. 
Let u represent src="https://sciemce.com/media/4/ppg__tttt0515191515__f1q111g7.jpg" style="vertical-align: -17.0px;" />- 
, v represent 
, and w represent 
. Solve first for u, v, and w. Then solve the system of equations.
- 
- 
= 
- 
+ 
= - 
- 
- 
= - 
A. (-8, -5, 4)
B. 
C. 
D. (-8, -5, -4)
For the parametric equations given, use a graphing calculator to generate the curve over the stated interval for the parameter t. Use the window specified. Also, find a rectangular equation for the curve.x = ln(t - 2), y = 3t + 1, for t in (2, 10]
A. 
The rectangular equation for the curve is
y = ex + 7, for x in [-?, ln 8].
B. 
The rectangular equation for the curve is
y = 3ex + 7, for x in [-?, ln 8].
C. 
The rectangular equation for the curve is
y = 3ex - 7, for x in [-?, ln 8].
D. 
The rectangular equation for the curve is
y = 3ex + 2, for x in [-?, ln 2].