The correct answer would be, 300,060,520
The exponent for that would be 13^3.
If the answer is incorrect, then i am sorry.
1)

2)

Here, the variable

can assume any value, and usually an inequality presented like this has

as a stand-in for all real numbers. If we really wanted to make that fact clear, we could write the two inequalities like this:

Formally, you'd read

as "

is an element of the set of real numbers," which is a fancy way of saying that

can be any real number.
i think the answer to this is 3.15