Find the derivative of the function.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. none of these
Answer: B
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Find the exact value of the expression.tan
A. - 
B. 
C. - 
D. - 
For the pair of similar triangles, find the length of the indicated side.
In the outer triangle, the shortest side has length 6, and the middle side has length 9. In the inner triangle, the shortest side has length 2, the middle side has length 3, and the longest side has length 4. Find the length, x, of the longest side of the outer triangle.
A. x = 4 B. x = 12 C. x = 11 D. x = 16
Write out the first five terms of the sequence.an = 
xn
A. 
x, 
x2, 
x3, 
x4, 
x5
B. - 
x, - 
x2, - 
x3, - 
x4, - 
x5
C. 
x, - 
x2, 
x3, - 
x4, 
x5
D. 
x, - 
x2, - 
x3, - 
x4, - 
x5
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -2x2 + 7x + 8
A. Increasing on 
; decreasing on 
B. Increasing on 
; decreasing on 
C. Increasing on (-?, 0); decreasing on ( 0, ?)
D. Increasing on (-?, 1); decreasing on ( -1, ?)