What is the value of the expression below when w=2 and x=2
9w - x

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?

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)