Answer:
y
=
−
1
2
⋅
(
x
+
2
)
2
−
1
Step-by-step explanation:
To convert a quadratic from y = ax2 + bx + c form to vertex form, y = a(x - h)2+ k, you use the process of completing the square. Let's see an example. Convert y = 2x2 - 4x + 5 into vertex form, and state the vertex. Equation in y = ax2 + bx + c form.
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Y=x-1 as the general line equation is y=x
The decrease is 8.7%
Step-by-step explanation:
Old price = $23000
New price = $21000
Difference = New price - Old price
Difference = 21000 - 23000 = -2000
The negative sign indicates the decrease.

Rounding off to nearest tenth;
Percent decrease = 8.7%
The decrease is 8.7%
Keywords: difference, percentage
Learn more about percentages at:
#LearnwithBrainly
$10.62 / 61lb =$7.05 / 4 lb
se invierte $7.05 y 61 lb
$10.62/ $7.05 =61lb / 4lb
simplifica
$3.54/$2.35=61/4lb
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