The function f(x)\displaystyle {f{{\left({x}\right)}}} has a domain of all real numbers, is periodic and has a period of p=18\displaystyle {p}={18}. The graph of one complete period is shown below.
Find the following values:
f(3)=\displaystyle {f{{\left({3}\right)}}}=  
f(30)=\displaystyle {f{{\left({30}\right)}}}=  
f(200)=\displaystyle {f{{\left({200}\right)}}}=