Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the parabola 
to the parabola 
.
A. 800
B. 100
C. 400
D. 768
Answer: A
Mathematics
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Determine whether the argument is valid or invalid.All women are wealthy. Amanda is a woman. Therefore, Amanda is wealthy.
A. Valid B. Invalid
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Solve the given differential equation.4y" - 5y' + 5y = 0
A. y = ex
/8 
B. y = e5x/8 
C. y = c1e5x/8 + c2 ex
/8
D. y = e-5x/8 
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Sketch the graph of the exponential function. Label the y-intercept.f(x) = 2x
A. 
B. 
C. 
D. 
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Find the first four terms of the sequence.an = an-1 - an-2; a1 = 4, a2 = 2
A. 4, 2, 2, -2 B. 4, 2, -2, -4 C. 4, 2, 0, -2 D. 4, 2, 6, 8
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