# How do you write an algebraic expression that models the word phrase "The sum of 18 and twice a number"?

##### 1 Answer

Jan 27, 2016

18 + 2n

#### Explanation:

let the number be n then twice the number is

# 2 xx n =2n# The 'sum of ' means addition

hence the sum of 18 and twice a number is : 18 + 2n