If t(x) = 9 + 2f(x) and f(x) = x^2 - x - 3, then what is t(f(-2))?
Since f(x) = x2 - x - 3 ---> f(-2) = (-2)2 - (-2) - 3 = 3.
Since t(x) = 9 + 2·f(x) ---> t( f(-2) ) = 9 + 2·(3) = 15
