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Answer:

Step-by-step explanation:
Given
The above data
Required
Determine the expected value E(x)
E(x) is calculated as thus;

Where f(x) represents the total sale of each outcome;
For A:


For B:


For C:


Hence, E(x):


362 because if you multiply 30 by 12 you will get 3 hundred 60 two
700 is 10 times as much as 70 since 70 times 10 equals 700.
70 is the answer
Hope this helps!
Answer:
9 1/2
Step-by-step explanation:
9 and a half