A bicycle store costs $2800 per month to operate. The store pays an average of $80 per bike. The average selling price of each bicycle is $160. How many bicycles must the store sell each month to break even?
The store must sell bicycles each month to break even
(Type a whole number.)

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.