ashley or roberto

Question

1. Ashley posts 17 status updates on her Facebook wall each day. Roberto posts 21 status updates on his Facebook wall each day. 

Part A: Define each variable and write an algebraic expression to describe the combined number of posts for Ashley and Roberto after any given number of days.

Part B: Write an algebraic expression to describe the difference between number of posts for Ashley and Roberto after any given number of days.

Answer 1

Answer 2

Let n = Total number of days

A: Total posts = (Ashley+Roberto)(number of days they post)

Total posts = (17+21)n = 38n

B: Difference = (Robert - Ashley)(number of posts)

Difference = (21-17)n = 4n