Each answer is of the form $B.DP where B is the number of dollars (bucks), D the number of dimes, and P the number of pennies.
1. $3.04
2. $1.56
3. $9.60
4. $4.09
I'll leave the last two for you.
First, compute the mean:

Next compute the absolute deviations for each datapoint:
|75-95.555|=20.555
|89-95.555|=6.555
|145-95.555|=49.445
|85-95.555|=10.555
|80-95.555|=15.555
|92-95.555|=3.555
|104-95.555|=8.445
|90-95.555|=5.555
|100-95.555|=4.445
Next we'll take the mean of these deviations:

The mean absolute deviation of your data is 13.8517
Answer:
960 people.
Step-by-step explanation:
x = 0.6x + 384
x - 0.6x = 384
0.4x = 384
x = 384 / 0.4 = 960.
Answer:
200%
Step-by-step explanation:
Increase: 13.5 - 4.5 = 9
%increase:
Increase/initial × 100
9/4.5 × 100
200%
Answer:
A. is the appropriate answer to carl's proof