Question

. Write an algebraic expression for the following. the sum of 12 and 3 times a number

12+3

12+3n

12n+3

15

Answer 1

let "a number" = n

"3 times a number" = 3n

"the sum of 12" = "+ 12

Combine the two terms

3n + 12, or (B) is your answer

hope this helps