Your answer is C for sure I am!
The answer is 9.65x10^14 because in order for the decimal point to be between 9 and 6 you need to move 14 decimal places back
We have the expression:

And want to evaluate in y=5, this means we have to replace y in the expression for 5 and calculate the value of the expression, so:

The expression is 30 when y=5.
Answer:
Here's a screenshot. Hope this helps
Given:

Find: values belong to the solution
Explanation:

and

so those values are solution which is x<12
i.e; x=4 and x=11