Find the coordinates of the vertex and x-intercepts for the quadratic function.f(x) = 4x2 + 16x + 21
A. vertex (-2, 5)
x-intercept (21, 0)
B. vertex (2, 5)
x-intercept (21, 0)
C. vertex (2, 5)
no x-intercept
D. vertex (-2, 5)
no x-intercept
Answer: D
Mathematics
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Fill in the blank(s) with the appropriate word(s).
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a. 
b. 
c. 
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dx
A. 2
- 
+ C
B. C
C. - 
- 
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