Helppp

i’m so confused with this math stuff

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

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work

Two numbers have a sum of 93. if one number is p, express the other number in terms of p.