Find a quadratic model for the sequence with the indicated terms.
?
a0 = 3, a1 = 3, a4 = 15
?
A. an = n2 - n + 15
B. an = n2 + n 
3
C. an = n2 - n - 3
D. an = n2 + n + ?3
E. an = n2 - n+ 3
Answer: E
Mathematics
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