How to know the difference between, irrational, rational, whole, ext

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

Which expression gives you the distance between the points (5,1)and(9,-6)

Adie is rolled, what is the probability of getting an even number or a 3? write the solution too