Im having problems with a C3 question and don't understand. For those of you that have the edexcel text book, its Exercise 3A question 2C. I don't know how to draw the graph.

For those of you who dont its:

The value of a car varies according to the formula
V=20 000e^−t/12

where V is the value in £'s and t is its age in years from new.

(a) State its value when new.

(b) Find its value (to the nearest £) after 4 years.

(c) Sketch the graph of V against t.

I dont know how to do part C thanks for any help

click on the link below