In a department store, a $40 dress is marked, “Save 25%.” What is the discount? What is the sale price of the dress? $30 discount, $10 sale price

$10 discount, $30 sale price

$10 discount, $40 sale price

$25 discount, $30 sale price

Item 1 which question could the expression 1000n answer? let n = the number of gallons of gas used. how many miles per gallon did the car get driving 1000 miles? let n = the number of grams of food needed for each dog. how many grams of food are needed to feed 1000 dogs? let n = the number of people at the show. how many empty seats were there at the show if there are 1000 seats at the theater? let n = the number of seats at the theater. how many empty seats will there by if 1000 people come to the show?