Find the coordinates of the vertex and x-intercepts for the quadratic function.f(x) = 4x2 + 16x + 21
A. vertex (2, 5)
no x-intercept
B. vertex (-2, 5)
x-intercept (21, 0)
C. vertex (2, 5)
x-intercept (21, 0)
D. vertex (-2, 5)
no x-intercept
Answer: D
Mathematics
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)2
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?
?
A. ?
B. 
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D. ?
E. ?
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