Question

1. which expression is equivalent to 5(n - 9)?

5n - 45
5n + 45
5n - 9
5n + 9

Explanation:

Step1: Apply distributive property

$5(n - 9)=5\times n-5\times9$

Step2: Calculate the products

$5\times n = 5n$ and $5\times9 = 45$, so $5n-45$

Answer:

$5n - 45$ (corresponding to the first - option in the multiple - choice list)