Six years ago, Robert’s age was __________. a = Robert’s present age

Which expression models this situation?
Responses

A 6a6a

B a + 6a + 6

C a – 6 a – 6

D a –(-6)a –(-6)

E 6 - a

The correct expression that models the situation is C) a - 6.

Since the statement says "Six years ago," it means that we need to subtract 6 from Robert's present age.