The problem ask to calculate the integral of (f(2x)) dx from 0 to 2 a. Base on my calculation and further computation, I came with a solution that leads to an answer of (f(2x))dx = 5. I hope you are satisfied with my answer and feel free to ask for more if you have clarification and further question.
ANSWER
correct to 3 decimal places is 
EXPLANATION
We start counting from the first number after the decimal point.
So starting from 2, we count 3 decimal places to the right and land on 4.
Next, we check to see if the number after 4, is greater or equal 5, then we round up, else we round down.
Since that number is 5, it is greater than or equal to 5.
Therefore we round up to obtain 
Assuming the sequence goes on like this 11,-33,99,-297,891,...,
its general formula is

So, the 9th term is
The answer is C
5.76 x 10 ^3 means you move the decimal 3 times:
57.6> 576.0> 5760