Graph the equation and state whether the line has a positive or negative slope.y = 8x + 6
A. Positive slope
B. Negative slope
C. Positive slope
D. Negative slope
Answer: C
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Find the function value.If Q(x) = -2x2 - 6x - 4, find Q(0)
A. 0 B. -2 C. -4 D. -6
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 = 
, y = 4t + 3, for t in [0, 4]
A. 
The rectangular equation for the curve is
y = 3x2 + 4, for x in [-1, 2].
B. 
The rectangular equation for the curve is
y = -3x + 19, for x in [0, 2].
C. 
The rectangular equation for the curve is
y = -3x2 + 19, for x in [0, 2].
D. 
The rectangular equation for the curve is
y = 4x2 + 3, for x in [0, 2].
Change 6 to a percent.
A. 600% B. 0.06% C. 60% D. 0.6% E. none of these
Solve the problem.The time between major earthquakes in a particular region of the Mediterranean is a random variable with probability density function f(x) = 
e-x/1800 for x in [0, ?), where t is measured in days. Find the expected value and the standard deviation of this probability density function.
A. ? = 3600 days; ? = 2545.2 days B. ? = 1800 days; ? = 3600 days C. ? = 1800 days; ? = 2545.2 days D. ? = 1800 days; ? = 1800 days