Question

the inequality
x + 13 < 0 Give your answer in interval notation.​

Answer 1

Answer:(−∞,-13)

Step-by-step explanation:

solve for x the convert to interval notation

x<-13  → (−∞,-13)

Since it's a < and not a ≤ you use a parentheses instead of a bracket

Answer 2

Answer:

$\large\boxed{x<-13\to x\in(-\infty,\ -13)}$

Step-by-step explanation:

$x+13<0\qquad\text{substract 13 from both sides}\\\\x+13-13<0-13\\\\x<-13$