Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term. –4, –8, –12, –16,

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?