Answer:
x = -9
Step-by-step explanation:
given:
[tex]f(x) = - x - 5[/tex]
solve for x, when:
[tex]f(x) = 4[/tex]
◇◇•◇◇
[tex] - x - 5 = 4[/tex]
[tex] - x = 4 + 5[/tex]
[tex] - x = 9[/tex]
[tex]\boxed{\green{x = - 9}}[/tex]
