Question

Joseph tweets 13 times a day. Define each variable and write an algebraic expression to describe the number of posts after any given number of days

Answer 1

1 day = 13 tweets
2 days = 13 × 2 tweets
3 days = 13 × 3 tweets
4 days = 13 × 4 tweets
5 days = 13 × 5 tweets

'n' days = 13 × n

The variable is the number of days 'n' and the expression is '13n'