Help please

Which of these choices show a pair of equivalent expressions?

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers