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To solve the inequality \( \sqrt{4x + 1} \leq 5.83 \), we start by squaring both sides:
\[
4x + 1 \leq (5.83)^2
\]
Calculating \( (5.83)^2 \):
\[
(5.83)^2 = 33.9889
\]
So the inequality becomes:
\[
4x + 1 \leq 33.9889
\]
Next, we subtract 1 from both sides:
\[
4x \leq 33.9889 - 1
\]
\[
4x \leq 32.9889
\]
Now, divide by 4:
\[
x \leq \frac{32.9889}{4}
\]
Calculating \( \frac{32.9889}{4} \):
\[
x \leq 8.247225
\]
Now we can determine which of the given options satisfies this inequality:
A) \( 8 \) → \( 8 \leq 8.247225 \) (True)
B) \( 9.5 \) → \( 9.5 \leq 8.247225 \) (False)
C) \( 10 \) → \( 10 \leq 8.247225 \) (False)
D) \( 9 \) → \( 9 \leq 8.247225 \) (False)
Therefore, the only value of \( x \) that makes the inequality true is:
**A) 8**