The correct option is : 2
<u><em>Explanation</em></u>
For finding the mean number of working TV sets, we need to <u>divide the total number of TV sets by the total frequency</u>.
Now for finding the total number of TV sets, first we will <u>multiply each number of TV sets by it's frequency and then sum up all the results</u>.
So, the total number of TV sets

and total frequency 
Thus, the mean number of working TV sets 
Answer:

area: 136 cm
perimeter: 48 cm
Step-by-step explanation:
For the first one just subtract

for the second one you just have to break it into smaller, more digestible pieces (work below)
Answer:
-11
Step-by-step explanation:
Solve using linear equation
-12x=-8+116
-12x=108
-x=11
x=-11
Answer:
b and 288
Step-by-step explanation:
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Tyson
P=8.9 x 4hrs=35.60$
8.9 x 8hr=71.20$
8.9 x 12hr=106.80$
8.9 x 16hr=142.40$
4hr. 35.60$
1hr. X dollars
X=35.60$/4hrs
X=8.90$
Jamaal
4hr. 38.00$
1hr. X dollars
X=38.00$/4hrs
X=9.50$