I dont think you can do this without finding derivatives.
By definition, the number
is the ratio between the circumference and the diameter:

This implies that

And so your circumference is 
Answer:
like a month she earns $462.30
so if you want like how many she earns in 4 years then,
just do $462.30×4
after calculation answer will come.
Place a dot on the origin.
A line that has a slope of

goes by this formula:

So "rise -2" and "run 3."
Rise -2 is basically go down 2, so go down 2 units from the origin. Run 3 means go right 3 units from (0, -2).
Draw a line through (3, -2) and (0, 0).