Recursive and explicit rules for arithmetic and geometric sequences help needed

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

The statement tan theta= -12/5, csc theta=-13/12, and the terminal point determained by theta is in quadrant two

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?