Question

How do you write the phrase as an algebraic expression: twice the sum of 15 and a number?

Answer 1

See the solution explanation below:

Explanation:

First, let's call "a number" `n`.

Then "the sum of 15 and a number" can be written as:

`15 + n`

Now, we can write "twice the sum" as"

`2(15 + n)`