# Question: a the three difference quotients are represented geometrically for f48306...

###### Question details

a. The three difference quotients are represented
geometrically for f(48)=306. What is ? (Answer: 12)

b. What is the value of each difference quotient for f(20)=270?
(Answers are:

c. What is the limit of each difference quotient as for f(48)=306? Points
are at (36,153), (48, 306), and (60,765)

I have figured out the answers to parts a and b, but unable to
correctly calculate part c. Thanks