(-82)+(-47)-(+33)do u all know this answer

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

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

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?