Answer:
For
minutes Elena add water to correct the error.
Step-by-step explanation:
The capacity of the washing machine is
gallons.
She uses
gram soap for
gallon of water
Her son by mistake dissolved
grams of soap to
gallons of water.
gram soap is right for
gallons of water, thus
gallon of water must be added more.
She pore water
gallons per minute thus,
gallons of water will take
minutes.
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Please indicate exponentiation using " ^ " Thanks.
f(x)=x2+14x+40 => <span>f(x)=x^2+14x+40
Next, complete the square:
</span>f(x)=x^2+14x+ 49 - 49 +40 = (x+7)^2 - 9
Write this in the form y = (x+7)^2 - 9 or y + 9 = (x+7)^2
Comparing this result to y = a(x-h)^2 + k, we see that h = -7 and k=-9
In vertex form, the equation is y + 9 = (x+7)^2 and the vertex is at (-7, -9).