Answer:

Step-by-step explanation:
<h3>Derivative </h3>

Since, the derivative of e^x is e^x and e^(yx) is ye^(yx)
Answer is (A). (X’ , Y’) = (x, y-6)
Answer:

Step-by-step explanation:

The given expression is:

So, there are two terms in the expression
1)

2) -5
The constant term is -5.
The co-efficient of

is 4.
Answer:
By saying "paying the same rate"
I believe you want to know for example when two people are buying a product how to know if they are paying the same amount.
If so then there are a couple of factors at play.
First of all you need to identify the GDP of the product and the amount of tax/VAT which if calculated properly may help you tell if they are paying the same amount or not.