Final answer:
To solve the inequality 4x + 6 < 18, subtract 6 from both sides and then divide by 4, resulting in x < 3, making option (a) correct.
Step-by-step explanation:
The solution to the inequality 4x + 6 < 18 can be found by isolating the variable x. First, we subtract 6 from both sides of the inequality to get 4x < 12. Then, we divide both sides by 4 to find the value of x. This gives us:
x < 3
Therefore, the correct answer is a) x < 3.