Answer:
Third option. 
Step-by-step explanation:
For this exercise you need to remember one of the properties for exponents.
There is a property called the "Negative property of exponents" which states the following:
Where 
As you can observe,
is the reciprocal of 
In this case you have the following expression given in the exercise:

Observe the expression. As you can notice, the base "n" has a negative exponent, which is -6.
Therefore, applying the Negative property of exponents explained at the beginning of this explanation, you can simplify the expression.
Then, the simplified form of
is the one shown below:

Answer:
Elga is 38
Step-by-step explanation:
Alvin is 29
38 + 29 = 67
Answer:
24/225
Simplified: 8/75
Step-by-step explanation:
8 + 4 + 3 = 15
Since there are no replacements the denominator will get lower every time a marble is pulled.
First is blue which means,
3/15
The second is white,
8/15
If I'm not wrong you would multiply 3/15 and 8/15 and you get 24/225.
Simplified: 8/75
9/11 is equal to 18/22, so then D.