15 + 16 + 17 = 48
The answer is 48.
I would say 22 i first looked at amount of average kids in a class then tried every number close. 484/22=22
To find this you would do 800 + 15x where x is the amount of years.
For 9 years it would be 800 + 15(9) which is 800 + 135.
At the end of 9 years, the apartment's rent would be $935. I hope that's utilities included because... yikes...
140 is the answer! hope it helped
