A factory makes rods by cutting platic pipes that are 5 feet long into 8 rods. How long is each rod

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?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

What expression is equivalent to 42x-56y