Respuesta :

The initial expression is:

h(x) = - x - 4

If h(x) = 9, we get:

9 = - x - 4

Adding 4 on both sides:

9 + 4 = - x - 4 + 4

13 = -x

Multiplying by -1 on both sides:

13(-1) = (-x)(-1)

-13 = x

Answer: x = -13

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