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x = 0 and y = 4

Explanation:

To solve, we can substitute x + 4 for y in the equation y = 2x + 4.

y = 2x + 4

x + 4 = 2x + 4

Now we can use the inverse operation of addition and subtract 2x from each side of the equation.

x + 4 - 2x = 2x + 4 - 2x

Combine like terms.

-x + 4 = 4

Then we would subtract 4 from each side of the equation.

-x + 4 - 4 = 4

-x = 0

x = 0

Now that we know x = 0, we can substitute 0 for x in the equation y = x + 4

y = x + 4

y = 0 + 4

y = 4

the answer is b.

hope is