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 + 1)
=
5(3 + x) = 5(3 + 1)
= 5(4)
evaluate 15 + x when x = 0
15 + x = 15 + 0
= 15

Explanation:

Step1: Substitute x = 1 into the expression

We have the expression \(5(3 + x)\), and we substitute \(x = 1\) into it. So we get \(5(3 + 1)\).

Step2: Calculate the value inside the parentheses

First, calculate the value inside the parentheses: \(3 + 1 = 4\).

Step3: Multiply the result by 5

Then, multiply 5 by the result we got from the parentheses: \(5\times4 = 20\).

Answer:

20