AMC 10B 2010 Problem 4

Past Contests AMC 10 2010 Part B
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1

For a real number x, define \heartsuit(x) to be the average of x and x^{2}. What is \heartsuit(1)+\heartsuit(2)+\heartsuit(3) ?

Answer Choices
A. 3
B. 6
C. 10
D. 12
E. 20