If x = 3, what is the value of 2x + 1?

If x = 3, what is the value of 2x + 1?

• A. 7
• B. 8
• C. 9
• D. 10

Answer: (A)

To determine the value of the expression 2x + 1 when x equals 3, we start by substituting 3 for x in the expression. This gives us: 2(3) + 1. Now, we perform the multiplication: 2 * 3 = 6. Next, we add 1 to this result: 6 + 1 = 7. Therefore, when x equals 3, the value of the expression 2x + 1 is 7. This is why the correct answer is indeed 7.

To determine the value of the expression 2x + 1 when x equals 3, we start by substituting 3 for x in the expression. This gives us:

2(3) + 1.

Now, we perform the multiplication:

2 * 3 = 6.

Next, we add 1 to this result:

6 + 1 = 7.

Therefore, when x equals 3, the value of the expression 2x + 1 is 7. This is why the correct answer is indeed 7.