Pat has 4 more cards than Frank. Hope that helps! :)
Answer: Our required formula becomes :

Step-by-step explanation:
Since we have given that

We need to write a formula for f(b) in terms of b So, it becomes

Hence, our required formula becomes :

The slope is 5/6.
The x-intercept is (6, 0)
The y-intercept is (0, -5)
E and ln are each other's opposite. So the answer is simply 7x