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 =2n2×n=2n The 'sum of ' means addition
hence the sum of 18 and twice a number is : 18 + 2n
