birth weight in the United States are normally distributed with a mean of 3420g and a standard deviation of 495g. if a hospital plan to set up special observation of the lightest 4% of the babies, what weight is used for the cut off separating the lightest 4% from the others

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

step-by-step explanation: