Simplify the expression.
A. 16j
B. 16
C. -16
D. -4
Answer: C
Mathematics
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Provide an appropriate response.What is true of both the first term and the last term in a binomial expansion?
What will be an ideal response?
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Solve the problem.The disk (x - 5)2 + y2 ? 1 is revolved about the y-axis to generate a torus. Find its volume. (Hint: 
= 
?, since it is the area of a semicircle of radius 1.)
A. 5?2
B. 5?
C. 10?2
D. 
?2
Mathematics
Solve the problem.The sum of a student's three scores is 221. If the first is 20 points more than the second, and the sum of the first two is 26 more than twice the third, what was the first score?
A. 68 B. 45 C. 65 D. 88
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Graph the function.Use the graph of f(x) = ex to obtain the graph of g(x) = e-x.
A. 
B. 
C. 
D. 
Mathematics