C=present cost
C*1.15=cost for next year
C*1.15²=cost in two years
C*1.15³=cost in three years
....
C/1.15=cost of ticket last year
C/1.15²=cost of ticket two years ago
....
Post your answers for verification if you wish.
If a movie ticket now averages $6.75 and has been increasing an average of 15% per year compute the cost:
in 8 years
8 years ago
1 answer