What is the answer to twice a number n plus 3?

Question

I really don't understand what this math problem is saying or asking. Please help.

Answer 1

it asks you to change the English phrase into a math expression

 

they call the unknown number the letter n

 

twice a number means you multiply the number by 2

 

this is written as 2n

 

plus 3 means add 3

 

So the complete expression is 2n + 3