Question

The algebraic expression that represents twice the sum of some number and 3 is?

n + 2(3)


2(n + 3)


2 + n + 3


2n + 3

Answer 1

2(n+3)

Explanation:

Let's look at the statement:

'twice the sum of some number and 3'

Twice means 2 multiplied by something.

What is that something? It is the sum of some number and 3.

Let's replace the some number with variable n.

So it becomes the sum of n and 3, which translates to n+3.

So you put the two parts together:

2 multiplied by (n+3), rewritten as 2(n+3).

Answer 2

2(n+3)

Explanation:

The sum to 3 = n+3

That sum doubled (~twice) = 2(n+3)