Answer:
The parent function for a concave up parabola with its vertex at the origin is
y=a(x-h)^2+k.
+a points the parabola concave up
-a points the parabola concave down
h moves the vertex along the x axis that many times
k moves the vertex along the y axis that many times.
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Im not good with math sry
3. -4x - 6
-3(x + 2) - x → ( distribute bracket by - 3)
= - 3x - 6 -x → (collect like terms)
=( - 3x - x) - 6 = - 4x - 6
4. A has the smallest value
A =( 2 - 3 ) = -1
B = 2 × 3 = 6
C = 2 + 3 = 5
D = 
A is negative while the others are all positive.
Thus A is the smallest value expression