What is the angle of depression from the top of a 500-foot cable that runs from a tower to a point 450 feet away?

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?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)