Answer:
36
Step-by-step explanation:
All you gotta do is 9x4 or 9+9+9+9=36
200+12m= 644
subtract 200 from both sides
12m= 444
divide both sides by 12
m= 37
he sold 37 albums
Answer:
$83.46
Step-by-step explanation:
24 + 54 =78
78 × 7% = 5.46
78 + 5.46 = $83.46
1) Mean Absolute Deviation = 1.75
2) Mean = 244