Find the coordinates of the vertex and x-intercepts for the quadratic function.f(x) = x2 + 2x + 1
A. vertex (1, 1)
x-intercept (2, 0)
B. vertex (1, 0)
x-intercept (1, 0)
C. vertex (-1, 0)
x-intercept (-1, 0)
D. vertex (-1, 1)
x-intercept (2, 0)
Answer: C
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A. 
B. 
C. 
D. 
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