Help asap state the domain and range

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!