Question

evaluate 5(3 + x) when x = 0.
5(3 + x) = 5(3 + 0)
= 15
evaluate 5(3 + x) when x = 1.
5(3 + x) = 5(3 + \square)

Explanation:

Step1: Substitute x with 1

We know that \( x = 1 \), so we substitute \( x \) in the expression \( 5(3 + x) \) with 1. So we get \( 5(3 + 1) \), which means in the box (where we substitute \( x \)) we put 1.

Step2: Calculate the result (optional for the box, but to check)

First, calculate inside the parentheses: \( 3 + 1 = 4 \). Then multiply by 5: \( 5\times4 = 20 \). But for the box, we just needed the value of \( x \) which is 1.

Answer:

1