Question

Find f(2), f(0), f(-1)

Answer 1

Put the values of x to the equation of the function f:

`f(x)=(x+21)/(9x-3)\\\\f(2)=(2+21)/(9(2)-3)=(23)/(18-3)=(23)/(15)\\\\f(0)=(0+21)/(9(0)-3)=(21)/(-3)=-7\\\\f(-1)=(-1+21)/(9(-1)-3)=(20)/(-9-3)=(20)/(-12)=-(5)/(3)`