Answer:
(3·x + 6) + (7·x + 4) = 180 --> x = 17
3·17 + 6 = 57
Answer D is correct.
From the function y=x^2-4x+7
to complete the square we proceed as follows:
The vertex form is given by:
y=(x-h)^2+k
where (h,k) is the vertex:
thus from the function we shall have:
y=x^2-4x+7
c=(b/2a)²
c=(4/2)²=4
thus adding an subtracting 4 in the expression:
y=x^2-4x+4-4+7
y=(x-2)^2+3
thus the vertex will be:
(2,3)
The answer is:
<span>D. Minimum at (2, 3)</span>
Answer: x = 25%
Step-by-step explanation: 45% + 30% = 75%
75% + 25% = 100%
