Answer: Second Option
and 
Step-by-step explanation:
If we have a function f(x) and its inverse function 
Then by definition:

Notice that the inverse of the function
is 
then:
If
and 
Then:



The answer is the second option
Answer:
Regular selling price (price before discount) 100%.
Price after trade discount of 15% is 85% of regular selling price..
Price after trade discount reduced to 10% is 90% of regular selling price.
By reducing the trade discount from 15% to 10% meant increasing the selling price by 5% of the selling price before applying the trade discount.
Answer:
The expression is true.
Explanation:

We know that (a +b)(a-b) = a²-b²
So we have ,

Which is Right Hand Side given.
So, the expression is true.
Answer:
Never gonna
Step-by-step explanation:
give you up,
Let you down,
make you cry
Run around and desert you