The prefix kilo means?

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

What is the inverse of the function f(x) = 2x + 1?

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?