Question

Which of the following is NOT a solution to the inequality below? 4x + 9 > 63? A. 13 B 14 C 15 D. 16

Answer 1

The given inequality is

`4x+9>63`

First, we subtract 9 from each side

`\begin{gathered} 4x+9-9>63-9 \\ 4x>54 \end{gathered}`

Then, we divide the inequality by 4

`\begin{gathered} (4x)/(4)>(54)/(4) \\ x>13.5 \end{gathered}`

So, 13 is not a solution because is less than 13.56.

The answer is A.