Question

peyton says the expressions $5(3 + x)$ and $15 + x$ are equivalent. evaluate $5(3 + x)$ when $x = 0$. $5(3 + x) = 5(3 + \square)$

Explanation:

Step1: Substitute \( z = 0 \) into the expression

We are given the expression \( 5(3 + z) \) and we need to evaluate it when \( z = 0 \). So we substitute \( z \) with \( 0 \) in the expression.
\( 5(3 + z)=5(3 + 0) \)

Step2: Simplify the expression inside the parentheses

First, we simplify the expression inside the parentheses. \( 3+0 = 3 \), so the expression becomes \( 5\times3 \)

Step3: Multiply the numbers

Now we multiply \( 5 \) and \( 3 \). \( 5\times3=15 \)

Answer:

The value of \( 5(3 + z) \) when \( z = 0 \) is \( 15 \), and the number in the box is \( 0 \).