Question

Jane thinks of a number. call it X. She doubles her number, then adds 5 to double the number. What is the number?​

Answer 1

4X + 5

Explanation:

We start with the unknown number, X.

Doubling the number :

⇒ 2 × X

⇒ 2X

Adding 5 to double the number :

⇒ 2(2X) + 5

⇒ 4X + 5