B) 12.75
Just add them all together
10+15+14+8+18+11+12+12+10+10+17+16=153
The devide the anser by the ammount of numbers you added together
153÷12=12.75
It is $100 because if you work it out on paper then you could have on the paper and the answer is 100$
The storage box is 9 feet deep.
Hope this helps!
