Question

How do you write an algebraic expression that models the word phrase "two times the difference of a number and eight"?

Answer 1

`2(n-8)` or `2n-16`

Explanation:

I'll use `n` to represent the unknown number

The difference of two numbers is the first number subtracted by the second number.

The difference of a number `n` and eight is `n-8`

Two times something is multiplying something by `2`.

Two times `n-8` is `2(n-8)` or `2n-16`