Answer :
The answer is C (220-7k)
one week = 7 days.
“k of them each day” meaning 7(k) for the week.
since he is losing cigarettes by smoking them, it should be subtraction.
220 - 7k
one week = 7 days.
“k of them each day” meaning 7(k) for the week.
since he is losing cigarettes by smoking them, it should be subtraction.
220 - 7k