Which question could the expression 1000 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?