Which expression is the same as 9 divided by 4

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 slope of the line (-7,2) (4,6)

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section