High School

Solve for [tex]x[/tex]: [tex]0.4 + x < 9[/tex]

A. [tex]x < 7[/tex]
B. [tex]x < 5[/tex]
C. [tex]x > 5[/tex]
D. [tex]x > 7[/tex]

Answer :

To solve the inequality [tex]\(4 + x < 9\)[/tex], we need to isolate [tex]\(x\)[/tex] on one side of the inequality. Here's how you can do it step by step:

1. Start with the inequality:
[tex]\[
4 + x < 9
\][/tex]

2. Subtract 4 from both sides to get [tex]\(x\)[/tex] by itself:
[tex]\[
4 + x - 4 < 9 - 4
\][/tex]

3. Simplify both sides:
[tex]\[
x < 5
\][/tex]

Therefore, the solution to the inequality is [tex]\(x < 5\)[/tex].

So, the correct option from the given choices is:
- B. [tex]\(x < 5\)[/tex]