<span>The inverse image or preimage of a particular subset S of the codomain of a function is the set of all elements of the domain that map to the members of S. Image and inverse image may also be defined for general binary relations, not just functions.</span>
Time taken for Kristin to catch up with the truck will be found using the formula time=(distance)/(speed) distance=20 km speed=90 km/h thus time=20/90=2/9 hours
