After determining whether the variation model below is of the form 
or 
, find the value of k.
x
20
40
60
80
100
y
?
?
?
?
A. 
B. 
C. 
?
D. 
E. 
?
Answer: E
Mathematics
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Find the quadratic approximation of f at x = 0.f(x) = ln(1 + sin 9x)
A. Q(x) = 1 + 9x + 
x2
B. Q(x) = 9x + 
x2
C. Q(x) = 9x - 
x2
D. Q(x) = 1 - 9x + 
x2
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Determine if the graph of the function is concave up or concave down.y = (x + 2)2
A. Concave down B. Concave up
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Find the sum.8 + 5 + 2 + . . . - 112
A. -2132 B. -104 C. -97 D. -2080
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A bag contains 6 cherry, 3 orange, and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability.All cherry
A. 0.1091 B. 0.3636 C. 0.1212 D. 0.7272
Mathematics