Answer
a) $0 $
b) $0 $
c) $-1$
Work Step by Step
We are given:
$f(x)=int(2x)$
Note that the notation $int (x)$ means: the largest integer that is less than or equal to $x$.
We simplify the given equation by substituting the $x$ values into the equation.
$a) f(1.2)=int [\dfrac{(1.2)}{2}]=int (0.6)=0 \\ b) f(1.6)=int [\dfrac{(1.6)}{2}]=int (0.8)=0 \\ c) f(-1.8)=int(\dfrac{(-1.8)}{2}=int(-0.9)=-1 $
