Answer:
200
Step-by-step explanation:
18 × 10 = 180
20 × 1 = 20
180 + 20 = 200
The answers would be:
9: $421.54
10: $872
11: $4,706.66
12: $645.83
13: $626.26
14: $3,981.22
15: $1,110.28
16: $210.50
5 is the mean